Summaries of blackpenredpen Videos 📚

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Series, 11 2 #19, Geometric Series thumbnail
Series, 11 2 #19, Geometric Series
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Eq of a line from two points EX1 thumbnail
Eq of a line from two points EX1
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my calculus exam #1 (100% gets an In-N-Out gift card) thumbnail
my calculus exam #1 (100% gets an In-N-Out gift card)
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Solution to that weird u-substitution, blackballwhitechalk thumbnail
Solution to that weird u-substitution, blackballwhitechalk
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So you think you can take the derivative, practice#2 thumbnail
So you think you can take the derivative, practice#2
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ultimate counting problem from Oxford MAT thumbnail
ultimate counting problem from Oxford MAT
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Q75, integral of 1/(1+x^2)^(5/2), trig sub thumbnail
Q75, integral of 1/(1+x^2)^(5/2), trig sub
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Integration by Parts (introduction & 2 examples) thumbnail
Integration by Parts (introduction & 2 examples)
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Intermediate Algebra Q15 (with music) | Los Angeles Pierce College math assessment sample thumbnail
Intermediate Algebra Q15 (with music) | Los Angeles Pierce College math assessment sample
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integral of sqrt(tan(x)) by brute force thumbnail
integral of sqrt(tan(x)) by brute force
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integral of x*sqrt(x-1) from 1 to 2, calculus 1 tutorial, basic u sub problem thumbnail
integral of x*sqrt(x-1) from 1 to 2, calculus 1 tutorial, basic u sub problem
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Feynman technique: integral of (x-1)/ln(x) from 0 to 1 thumbnail
Feynman technique: integral of (x-1)/ln(x) from 0 to 1
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special integrating factor of the form x^n*y^m, sect2.5#13 thumbnail
special integrating factor of the form x^n*y^m, sect2.5#13
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Solving a Quadratic Equation by Using the Quadratic Formula (patiently explained) thumbnail
Solving a Quadratic Equation by Using the Quadratic Formula (patiently explained)
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Solving a 3 by 3 System of Equations (the most organized way) thumbnail
Solving a 3 by 3 System of Equations (the most organized way)
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Why is 0^0 undefined? thumbnail
Why is 0^0 undefined?
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Intermediate Algebra Q9 (with music) | Los Angeles Pierce College math assessment sample thumbnail
Intermediate Algebra Q9 (with music) | Los Angeles Pierce College math assessment sample
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cube root of i, feat. Fematika thumbnail
cube root of i, feat. Fematika
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integration by parts, DI method, VERY EASY thumbnail
integration by parts, DI method, VERY EASY
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Multiply (5x^2-2x+3)(5x^2+2x+3) thumbnail
Multiply (5x^2-2x+3)(5x^2+2x+3)
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factoring a quadratic by completing the square thumbnail
factoring a quadratic by completing the square
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Series of n(1+n^2)^p, sect11.3#31 thumbnail
Series of n(1+n^2)^p, sect11.3#31
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My failed attempts to the integral of sqrt(sin^2(x)) thumbnail
My failed attempts to the integral of sqrt(sin^2(x))
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Q5, ACT Compass Trigonometry (official sample test problems) thumbnail
Q5, ACT Compass Trigonometry (official sample test problems)
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Laplace transform of the first derivative, L{f't} thumbnail
Laplace transform of the first derivative, L{f't}
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Sect 3 11 #32, derivative of cosh(ln(x)) thumbnail
Sect 3 11 #32, derivative of cosh(ln(x))
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Q308a, Arc length and Area of Sector of a circle thumbnail
Q308a, Arc length and Area of Sector of a circle
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Can 1^x=2? thumbnail
Can 1^x=2?
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derivatives of tan(x) and cot(x), quotient rule, cofunction identities thumbnail
derivatives of tan(x) and cot(x), quotient rule, cofunction identities
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Stewart Calculus, Sect 7 7 #11c Simpson's Rule thumbnail
Stewart Calculus, Sect 7 7 #11c Simpson's Rule
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delta y vs. dy (differential) thumbnail
delta y vs. dy (differential)
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definition of the  derivative with square root (and conjugate) thumbnail
definition of the derivative with square root (and conjugate)
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Integral of tan^3x*sec^4x (read pinned comment) thumbnail
Integral of tan^3x*sec^4x (read pinned comment)
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Integral Formula: Area thumbnail
Integral Formula: Area
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(Q5.) Simplify rational exponent expression thumbnail
(Q5.) Simplify rational exponent expression
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Biggest slope of a curve, calculus 1 optimization thumbnail
Biggest slope of a curve, calculus 1 optimization
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Q49, Integral of sec^5x thumbnail
Q49, Integral of sec^5x
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How to change the order of a triple integral thumbnail
How to change the order of a triple integral
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1-1/4+1/9-1/16+...  (zeta function & eta function) thumbnail
1-1/4+1/9-1/16+... (zeta function & eta function)
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i^i thumbnail
i^i
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100 derivatives (ultimate study guide) thumbnail
100 derivatives (ultimate study guide)
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evaluate a limit by factoring a sum of two cubes thumbnail
evaluate a limit by factoring a sum of two cubes
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Reading YouTube Comments to My Calc 2 Students (last day of the class) thumbnail
Reading YouTube Comments to My Calc 2 Students (last day of the class)
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Q11, how to reduce rational expression thumbnail
Q11, how to reduce rational expression
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Algebra Readiness Q15 | Pierce College math assessment sample thumbnail
Algebra Readiness Q15 | Pierce College math assessment sample
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Laplace transform of t^2e^(4t) thumbnail
Laplace transform of t^2e^(4t)
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Laplace Transform of second derivative, laplace transform of f''(t) thumbnail
Laplace Transform of second derivative, laplace transform of f''(t)
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Elementary Algebra Q2  |  Pierce College math assessment sample MDTP thumbnail
Elementary Algebra Q2 | Pierce College math assessment sample MDTP
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(Q15.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q15.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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limit of a sequence of continuous functions, need not to be continuous thumbnail
limit of a sequence of continuous functions, need not to be continuous
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Integral battle#20, hidden u-sub thumbnail
Integral battle#20, hidden u-sub
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Angle sum identities for sine and cosine thumbnail
Angle sum identities for sine and cosine
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derivative of x^-2 with the definition of derivative thumbnail
derivative of x^-2 with the definition of derivative
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Determine the form of a particular solution, second order linear differential equation, sect 4.4#31 thumbnail
Determine the form of a particular solution, second order linear differential equation, sect 4.4#31
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Sect 6.1 #11 thumbnail
Sect 6.1 #11
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that matrix problem on Taiwan College Entrance Exam thumbnail
that matrix problem on Taiwan College Entrance Exam
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(Q14.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q14.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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Q14, derivative of sinh^-1(x), two ways thumbnail
Q14, derivative of sinh^-1(x), two ways
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converting radians to degrees & degrees to radians, trig hw help thumbnail
converting radians to degrees & degrees to radians, trig hw help
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10 tips for starting a math YouTube channel thumbnail
10 tips for starting a math YouTube channel
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Bad Math but Right Answer thumbnail
Bad Math but Right Answer
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how you can trick calculus students with this limit thumbnail
how you can trick calculus students with this limit
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when calculus teachers don't think the derivative question is hard enough thumbnail
when calculus teachers don't think the derivative question is hard enough
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this is the AP calc BC FRQ test I took thumbnail
this is the AP calc BC FRQ test I took
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proving trig identity#1 thumbnail
proving trig identity#1
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Proving x^2 is continuous but NOT uniformly continuous on (-inf, inf) thumbnail
Proving x^2 is continuous but NOT uniformly continuous on (-inf, inf)
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Sum of 1/n^4 (Fourier Series & Parseval's Theorem) thumbnail
Sum of 1/n^4 (Fourier Series & Parseval's Theorem)
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Differentiate x^(1/x), twice and fast! thumbnail
Differentiate x^(1/x), twice and fast!
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Stewart Calculus, Sect 9 4 #21 thumbnail
Stewart Calculus, Sect 9 4 #21
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first order linear differential equation, 2.3#19 thumbnail
first order linear differential equation, 2.3#19
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Factor completely Q13 to Q15, difference & sum of two cubes thumbnail
Factor completely Q13 to Q15, difference & sum of two cubes
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(Q9.) Simplify and Combine Expressions with Cube Roots thumbnail
(Q9.) Simplify and Combine Expressions with Cube Roots
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Finding the vertex of a parabola from the standard form thumbnail
Finding the vertex of a parabola from the standard form
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Math for fun, sin(z)=2 thumbnail
Math for fun, sin(z)=2
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Integral of fractional part of x from 0 to 4 thumbnail
Integral of fractional part of x from 0 to 4
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Ultimate Partial Fraction Decomposition Study Guide (how setup) thumbnail
Ultimate Partial Fraction Decomposition Study Guide (how setup)
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how to solve the trig equation tan(θ)=-sqrt(3), θ in [0, 360), precalculus tutorial thumbnail
how to solve the trig equation tan(θ)=-sqrt(3), θ in [0, 360), precalculus tutorial
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Sect 10.2#3  equation of the tangent line to a parametric curve thumbnail
Sect 10.2#3 equation of the tangent line to a parametric curve
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Algebra Readiness Q12 | Pierce College math assessment sample thumbnail
Algebra Readiness Q12 | Pierce College math assessment sample
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solving 4x^2y''+y=0 by using reduction of order (characteristic equation with repeated roots) thumbnail
solving 4x^2y''+y=0 by using reduction of order (characteristic equation with repeated roots)
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Two Easy Integrals thumbnail
Two Easy Integrals
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Elementary Algebra Q4  |  Pierce College math assessment sample MDTP thumbnail
Elementary Algebra Q4 | Pierce College math assessment sample MDTP
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telescoping-looking series thumbnail
telescoping-looking series
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(Q5.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q5.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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Factor a crazy trinomial thumbnail
Factor a crazy trinomial
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how to solve this trigonometric equation from another one thumbnail
how to solve this trigonometric equation from another one
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(Q13.) So, you think you can take the derivative? thumbnail
(Q13.) So, you think you can take the derivative?
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f(x)=ln(x+4), domain, range, graph, and its inverse thumbnail
f(x)=ln(x+4), domain, range, graph, and its inverse
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Parametric vs. Cartesian (vid#5): Area thumbnail
Parametric vs. Cartesian (vid#5): Area
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series of (n^2+1)/(n^3+1), limit comparison vs direct comparison, calculus 2 tutorial thumbnail
series of (n^2+1)/(n^3+1), limit comparison vs direct comparison, calculus 2 tutorial
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integral of sqrt(x^2+1), with Euler Substitution, math for fun thumbnail
integral of sqrt(x^2+1), with Euler Substitution, math for fun
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Classic Tricky AP Calculus AB Problem (given f', answer about f) thumbnail
Classic Tricky AP Calculus AB Problem (given f', answer about f)
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Dear Tejas, challenge ACCOMPLISHED! (Speed run, Uncut) thumbnail
Dear Tejas, challenge ACCOMPLISHED! (Speed run, Uncut)
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PROVE THIS, product-to-sum identity for sine, (bprp retro) thumbnail
PROVE THIS, product-to-sum identity for sine, (bprp retro)
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Factoring x^2-64, x^3-64, and x^6-64 thumbnail
Factoring x^2-64, x^3-64, and x^6-64
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implicit differentiation arctan(x^2*y)=x+x*y^2, calculus 1 tutorial thumbnail
implicit differentiation arctan(x^2*y)=x+x*y^2, calculus 1 tutorial
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Arc Length of ln(sec(x)) using integral thumbnail
Arc Length of ln(sec(x)) using integral
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solve differential equation with substitution thumbnail
solve differential equation with substitution
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solution to the logarithmic triangle thumbnail
solution to the logarithmic triangle
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How to do epsilon-delta proofs (ultimate calculus guide) thumbnail
How to do epsilon-delta proofs (ultimate calculus guide)
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Changing Order of a  Double Summation thumbnail
Changing Order of a Double Summation
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Extreme Algebra Question  (#patience) thumbnail
Extreme Algebra Question (#patience)
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How to multiply two radical expressions thumbnail
How to multiply two radical expressions
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Find the centroid, calculus 2 thumbnail
Find the centroid, calculus 2
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An Afternoon With Prof. Pearsall (part1: it all started with long division?) thumbnail
An Afternoon With Prof. Pearsall (part1: it all started with long division?)
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Q54, Integral of sqrt(x^2+4x+5), trig sub with completing the square thumbnail
Q54, Integral of sqrt(x^2+4x+5), trig sub with completing the square
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Classic math proofs of the law of sine and the law of cosine thumbnail
Classic math proofs of the law of sine and the law of cosine
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Solve a system of equations! Elimination method, (LCM method) thumbnail
Solve a system of equations! Elimination method, (LCM method)
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Integral of sec(x) but without that trick! thumbnail
Integral of sec(x) but without that trick!
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partial fraction for 1/(x(x^2+1)) thumbnail
partial fraction for 1/(x(x^2+1))
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Sum of the first n natural numbers, Combinatoric, difference Equation thumbnail
Sum of the first n natural numbers, Combinatoric, difference Equation
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Laplace Transform, second order linear differential equation (part1) thumbnail
Laplace Transform, second order linear differential equation (part1)
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Intermediate Algebra Q14 (with music) | Los Angeles Pierce College math assessment sample thumbnail
Intermediate Algebra Q14 (with music) | Los Angeles Pierce College math assessment sample
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BIG brilliant integral thumbnail
BIG brilliant integral
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Increasing/Decreasing, Concave Up/Down, Inflection Points thumbnail
Increasing/Decreasing, Concave Up/Down, Inflection Points
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Volume of the Solid of Revolution, the Disc Method! thumbnail
Volume of the Solid of Revolution, the Disc Method!
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integral battle#2: a small sign makes a BIG difference! thumbnail
integral battle#2: a small sign makes a BIG difference!
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Why isn't abs(x) differentiable at x=0? (definition of derivative) thumbnail
Why isn't abs(x) differentiable at x=0? (definition of derivative)
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A Brilliant Limit thumbnail
A Brilliant Limit
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Area of Polar Curve r=1+2cos(theta) thumbnail
Area of Polar Curve r=1+2cos(theta)
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fun integral battle#1: thank you trig identities thumbnail
fun integral battle#1: thank you trig identities
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integral of e^u/(1-e^u)^2, u-substitution, calculus 1 tutorial thumbnail
integral of e^u/(1-e^u)^2, u-substitution, calculus 1 tutorial
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vertex formula of a cubic curve thumbnail
vertex formula of a cubic curve
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You didn't expect this "quadratic" equation to have 6 solutions! thumbnail
You didn't expect this "quadratic" equation to have 6 solutions!
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Radius and interval of convergence of a power series, using ratio test, ex#3 thumbnail
Radius and interval of convergence of a power series, using ratio test, ex#3
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If cos(2θ)=1/3, then sin(θ)=? thumbnail
If cos(2θ)=1/3, then sin(θ)=?
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improper integral of x*e^(-x^2) from -inf to +inf thumbnail
improper integral of x*e^(-x^2) from -inf to +inf
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Q18, use the distance formula thumbnail
Q18, use the distance formula
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Sect 4 9 #5 Intro to Antiderivative & Backward Power Rule thumbnail
Sect 4 9 #5 Intro to Antiderivative & Backward Power Rule
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sqrt(i+sqrt(i+sqrt(i+...))) = ? thumbnail
sqrt(i+sqrt(i+sqrt(i+...))) = ?
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(Q13.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q13.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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Power Series Solution for a differential equation thumbnail
Power Series Solution for a differential equation
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Degrees to DMS, on TI84 thumbnail
Degrees to DMS, on TI84
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(Q12.) So, you think you can take the derivative? thumbnail
(Q12.) So, you think you can take the derivative?
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separable differential equation with an initial condition thumbnail
separable differential equation with an initial condition
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Integral of (sin^n(x)+cos^n(x))^(1/n) as n goes to infinity thumbnail
Integral of (sin^n(x)+cos^n(x))^(1/n) as n goes to infinity
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the COMPLEX relationship between tan^-1(x) and tanh^-1(x) thumbnail
the COMPLEX relationship between tan^-1(x) and tanh^-1(x)
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Multiplication & Division in Base 2 thumbnail
Multiplication & Division in Base 2
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Exact Differential Equation, (2.4#11) thumbnail
Exact Differential Equation, (2.4#11)
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Casio FX-991 EX classwiz calculator tutorial (perfect for algebra, FE exam, EIT exam) thumbnail
Casio FX-991 EX classwiz calculator tutorial (perfect for algebra, FE exam, EIT exam)
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proving ALL logarithm properties using calculus thumbnail
proving ALL logarithm properties using calculus
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Series of n/2^n thumbnail
Series of n/2^n
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(Q6.) Multiply expressions with rational exponents thumbnail
(Q6.) Multiply expressions with rational exponents
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Power rule for derivative, ex3 thumbnail
Power rule for derivative, ex3
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what is the infinite tetration of i thumbnail
what is the infinite tetration of i
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integral of sin(x)*cos^3(x) vs integral of sin^2(x)*cos^3(x), calculus 2 tutorial thumbnail
integral of sin(x)*cos^3(x) vs integral of sin^2(x)*cos^3(x), calculus 2 tutorial
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Q31 MET115 Solving the System thumbnail
Q31 MET115 Solving the System
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I found a real analysis question on an old SAT subject test thumbnail
I found a real analysis question on an old SAT subject test
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sin(pi/12), using half angle formula thumbnail
sin(pi/12), using half angle formula
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Check for Linear Dependence (of 2 functions) thumbnail
Check for Linear Dependence (of 2 functions)
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Calculus, 11 9 #9 (1st way), Power Series Representation thumbnail
Calculus, 11 9 #9 (1st way), Power Series Representation
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(Q9.) So, you think you can take the derivative? thumbnail
(Q9.) So, you think you can take the derivative?
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Math for fun#3, highest & lowest points on a tilted ellipse? thumbnail
Math for fun#3, highest & lowest points on a tilted ellipse?
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Algebra Readiness Q13 | Pierce College math assessment sample thumbnail
Algebra Readiness Q13 | Pierce College math assessment sample
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Q4, integral of ln(x) from 2 to 6 with n=4 Simpson's Rule thumbnail
Q4, integral of ln(x) from 2 to 6 with n=4 Simpson's Rule
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they don’t teach these kinds of expoential equations in algebra thumbnail
they don’t teach these kinds of expoential equations in algebra
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Understand u-substitution, the idea! thumbnail
Understand u-substitution, the idea!
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4th derivative of  1/2*x*cos(x)+3 thumbnail
4th derivative of 1/2*x*cos(x)+3
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What does a ≡ b (mod n) mean? Basic Modular Arithmetic, Congruence thumbnail
What does a ≡ b (mod n) mean? Basic Modular Arithmetic, Congruence
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i-th root of -1 thumbnail
i-th root of -1
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graph of y=tan(x) thumbnail
graph of y=tan(x)
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Do We REALLY Have More Integers? thumbnail
Do We REALLY Have More Integers?
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Q6, When can Mn, Tn and Sn give exact answer? thumbnail
Q6, When can Mn, Tn and Sn give exact answer?
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Understand u substitution for integration (3 slightly trickier examples), calculus 1 tutorial thumbnail
Understand u substitution for integration (3 slightly trickier examples), calculus 1 tutorial
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(Q21.) Solve Square Root Equation thumbnail
(Q21.) Solve Square Root Equation
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solving a trigonometric equation sin(2x)=cos(x) with the double angle identity, precalculus tutorial thumbnail
solving a trigonometric equation sin(2x)=cos(x) with the double angle identity, precalculus tutorial
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Geometry Series thumbnail
Geometry Series
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Trigonometry: given sin(x)+cos(x)=1/5, solve for tan(x) thumbnail
Trigonometry: given sin(x)+cos(x)=1/5, solve for tan(x)
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Auxiliary equations with repeated roots thumbnail
Auxiliary equations with repeated roots
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harmonic addition theorem thumbnail
harmonic addition theorem
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Q8, OH MAN, THAT - 1 thumbnail
Q8, OH MAN, THAT - 1
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How to graph a side-way parabola thumbnail
How to graph a side-way parabola
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The Legendary n^2+n+41 (why do we need math proofs?) thumbnail
The Legendary n^2+n+41 (why do we need math proofs?)
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Q10, the one on the top matters! thumbnail
Q10, the one on the top matters!
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A Limit That Is Actually A Derivative thumbnail
A Limit That Is Actually A Derivative
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Nth term formula for the Fibonacci Sequence, (all steps included), difference equation thumbnail
Nth term formula for the Fibonacci Sequence, (all steps included), difference equation
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Surface Area of Solid of Revolution (about x-axis, formula explained) thumbnail
Surface Area of Solid of Revolution (about x-axis, formula explained)
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That derivative on the Hungary math book cover (Dear Pászthy) thumbnail
That derivative on the Hungary math book cover (Dear Pászthy)
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Q17 use pythagorean theorem thumbnail
Q17 use pythagorean theorem
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Q1, u-sub & u-sub with solving for x thumbnail
Q1, u-sub & u-sub with solving for x
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First Order Linear Differential Equation & Integrating Factor (introduction & example) thumbnail
First Order Linear Differential Equation & Integrating Factor (introduction & example)
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please let your students use the DI method for integration by parts thumbnail
please let your students use the DI method for integration by parts
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Solve (3x-2)(x+4)=24 thumbnail
Solve (3x-2)(x+4)=24
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Understand algebra mixture word problems (with alcohol) thumbnail
Understand algebra mixture word problems (with alcohol)
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(Q2.) Domain for square root function thumbnail
(Q2.) Domain for square root function
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derivative of sec(x) and csc(x), quotient rule, power + chain rule thumbnail
derivative of sec(x) and csc(x), quotient rule, power + chain rule
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math with story, infinite geometric series with Oreo, 1/2+1/4+1/8+... thumbnail
math with story, infinite geometric series with Oreo, 1/2+1/4+1/8+...
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floor(0.999...)=? thumbnail
floor(0.999...)=?
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Write an algebraic expression for cos(sin^-1 x), cosine of inverse sine x thumbnail
Write an algebraic expression for cos(sin^-1 x), cosine of inverse sine x
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Solving system of equations by graphing (consistent vs. inconsistent) thumbnail
Solving system of equations by graphing (consistent vs. inconsistent)
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Gabriel's Horn paradox (finite volume but infinite surface area) thumbnail
Gabriel's Horn paradox (finite volume but infinite surface area)
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Integrate x*cos(x^3) as a power series thumbnail
Integrate x*cos(x^3) as a power series
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all solutions to x^3=1 thumbnail
all solutions to x^3=1
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epsilon-delta definition ultimate introduction thumbnail
epsilon-delta definition ultimate introduction
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Series of 2^(1/n)-1 with limit comparison test, calculus 2 tutorial thumbnail
Series of 2^(1/n)-1 with limit comparison test, calculus 2 tutorial
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Q2, integral of cot(x) vs. Integral of csc(x)cot(x) thumbnail
Q2, integral of cot(x) vs. Integral of csc(x)cot(x)
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(Q1.) Graph of negative sqrt(x) thumbnail
(Q1.) Graph of negative sqrt(x)
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Series are NOT scary! (Part 1: test for divergence, telescoping, geometric, p-series) thumbnail
Series are NOT scary! (Part 1: test for divergence, telescoping, geometric, p-series)
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integral battle#13, the old, the new! thumbnail
integral battle#13, the old, the new!
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Algebra Readiness Q10 | Pierce College math assessment sample thumbnail
Algebra Readiness Q10 | Pierce College math assessment sample
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Euclid's proof that there are infinitely many primes! Classic math proof! thumbnail
Euclid's proof that there are infinitely many primes! Classic math proof!
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the fact, again (with a definition of e) thumbnail
the fact, again (with a definition of e)
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a double integral,  3 ways thumbnail
a double integral, 3 ways
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Calculating Work, pumping water out of a tank, calculus 2 tutorial, application of integration thumbnail
Calculating Work, pumping water out of a tank, calculus 2 tutorial, application of integration
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(Q25.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q25.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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you don't want to see this on your calculus test (calculus 1 limit) thumbnail
you don't want to see this on your calculus test (calculus 1 limit)
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Integral of the Error Function thumbnail
Integral of the Error Function
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Don't just solve the cubic, PreRMO 2012 thumbnail
Don't just solve the cubic, PreRMO 2012
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(Q23.) So, you think you can take the derivative? thumbnail
(Q23.) So, you think you can take the derivative?
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an integral of an integral thumbnail
an integral of an integral
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integration by u substitution *hard*, calculus 1 tutorial thumbnail
integration by u substitution *hard*, calculus 1 tutorial
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(Q24.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q24.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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integral of 1/((a-x)(b-x)) thumbnail
integral of 1/((a-x)(b-x))
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Factor 27x^3+1
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sin(pi/12), using difference of angles formula
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solving the last question of a math competition
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Q30, Simplify and Combine Radical Expressions
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derivative of x^y=y^x, implicit differentiation , calculus 1 tutorial, AP calculus
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a Putnam-exam-level system of equations
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A System of Equations with no solution
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Parseval's Theorem (Fourier series engineering mathematics)
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I couldn't do this integral when I was 3...
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Evaluate all trig functions from a given point on the terminal side ex1
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Solving logarithmic equations (part1)
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d/d(x^2)
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A Strong Induction Proof
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Precalculus challenge: can we just cancel out the sine? thumbnail
Precalculus challenge: can we just cancel out the sine?
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the afterward of integral of 1/(x^3+x), feat. a mysterious guest speaker thumbnail
the afterward of integral of 1/(x^3+x), feat. a mysterious guest speaker
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Sect 6 1 #4
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Convert polar coordinates to rectangular coordinates
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this is a "power series" equation! thumbnail
this is a "power series" equation!
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Math for fun#1, design your limit thumbnail
Math for fun#1, design your limit
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Superfactorial
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p thumbnail
p
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Separable differential equation, ex2
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Coming up with your own integral formula via non rigorous Leibniz's Rule
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pi-th derivative of x^pi thumbnail
pi-th derivative of x^pi
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Brilliant 1+2+3+...+n
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separable differential equations, 2.2#10 thumbnail
separable differential equations, 2.2#10
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integral of sqrt(x^2+2x), trig substitution, calculus 2 tutorial.
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solve differential with laplace transform, sect 7.5#3
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Solving a System of Equations by Substitution
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How I Make My Calculus Exams Harder!
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Integral of x*sec^2(2x), calculus 2 integration by parts
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A derangement problem
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Does the sequence n*sin(1/n) converge? Calculus 2 tutorial
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Heron's Formula Proof (the area of a triangle when you know all three sides)
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Elementary Algebra Q15 | Pierce College math assessment sample MDTP
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Great calc 1 final exam problems!!!
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limit of (x-ln(1+x))/x^2 with power series
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expanding (x+y)^2 (from no algebra to abstract algebra)
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Convert a polar equation to a cartesian equation: circle!
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Calculus, 11 9 #9 2nd way, Power Series Representation
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Intermediate Algebra Q2 (with music) | Los Angeles Pierce College math assessment sample
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inverse laplace transform, example#4, with partial fraction
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Variation of Parameters (introduction & idea)
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Limit of (1+sin(4x))^(cot(x)) as x goes to 0+, L'Hospital's Rule
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Derivative and integral of inverse secant
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integral of sec(x), 4 results! thumbnail
integral of sec(x), 4 results!
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Why We Use Radians In Calculus?
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a RARE mistake from Euler (AIME 1989)
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how to easily write the epsilon-delta proofs for limits
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Series (1+1/n)^n, test for divergence
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(Q9.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q9.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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Integral of x*cos(5x) with DI method
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(Q21.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q21.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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11.10 (Part 2) Power Series for e^x centered at 2
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(Q17) Sample #1, Math 141/146 common final, Solve system of equations by substitution
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Math for fun#2, i want a to get e thumbnail
Math for fun#2, i want a to get e
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(Q13) Sample #1, Math 141/146 common final, Glendale community college thumbnail
(Q13) Sample #1, Math 141/146 common final, Glendale community college
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solving x^4+1=0
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Fundamental theorem of calculus (part 1) example#2
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my all-in-one calculus question (uncut) thumbnail
my all-in-one calculus question (uncut)
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a spectacular solution to the Basel problem (sum of 1/n^2 via a complex integral)
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How many factors does 100,000 have?
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How to graph y=x^x by using calculus
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integral of 2^ln(x)
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7 factorials you probably didn't know
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believe in the math, not wolframalpha
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Q21 MET115 music
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integral of sqrt(x+sqrt(x+sqrt(x+...))), infinite nested square root
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integral of ln(x) from 0 to 1
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Solving 3^x=200, x^3=200, cube root of x = 5, and log base 3 of x = 5
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my favorite "which set has more elements" set theory problems thumbnail
my favorite "which set has more elements" set theory problems
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differentiable once but not twice? (ft. Oreo)
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Almost-exact differential equation with integrating factor
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Don't mess with conditional convergence
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Laplace transform of sqrt(t), without using the gamma function
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Laplace transform of 1/sqrt(t), *SPEED RUN* thumbnail
Laplace transform of 1/sqrt(t), *SPEED RUN*
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Which functions are of exponential orders? part2
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Fun Series From 2019 Pui Ching Math Competition
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an unfair calculus 1 homework question thumbnail
an unfair calculus 1 homework question
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(Q22) Sample #1, Math 141/146 common final, long division with polynomials
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taking a derivative that WolframAlpha can't handle
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tan(pi/12), using difference of angles formula
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Equation of the tangent line on a parametric curve
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Which is the worst math debate: 0^0, sqrt(1), 0.999...=1, or 12/3(4)?
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The last question on an AP calculus BC test
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Casio fx-115ES PLUS bonus features (n-th root, complex number, log with any base)
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Exact Differential Equation, 2.4#13
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L'Hopital's Rule for the 0/0 Indeterminate Form (proof)
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Comparison test for improper integrals example 2, calculus 2 tutorial
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Graphing the solution region of a system of inequalities
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solving equations but they get increasingly awesome
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Is the sum of two periodic functions still periodic?
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An Afternoon With Professor Po Shen Loh
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SF marathon 2017 (afterward)
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Inverse Laplace Transform, Sect 7.4#35
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Q47 MET115 Rule of Exponents
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4 curves to save your math grades
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My favorite VIRAL PEMADS question! thumbnail
My favorite VIRAL PEMADS question!
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Test for divergence for the series of (2^k*k!)/(k+2)!, calculus 2 tutorial
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Three Pretenders, by Mr. HIll!
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derivative of inverse secant
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Laplace Transform of t^2
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HOW TO CREATE YOUR OWN EXACT EQUATIONS?
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calculating work by using integral, pumping water out of a tank, calculus 2 tutorial
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(Q14.) So, you think you can take the derivative?
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(Q17.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra thumbnail
(Q17.) Sample 3 GCC Math 101/120 Common Final Intermediate Algebra
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Pewdiepie VS. T-series, using y=mx+b
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epsilon-N definition for a limit at infinity (introduction & proof writing tips)
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Calculus, 11 9 #25, Power Series Representation
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Check for Linear Independence (3 functions, using definition)
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Same Derivatives Implies Same Functions?
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Sqrt(2) is irrational! (Classic Proof)
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Partial fraction with cover-up
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Q16, simplifying complex fractions
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Graphing f(x)=x^2-x-ln(x)
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integral of floor of x from 0 to 4 (greatest integer function)
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Symmetric Matrix
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the 7 oz gold bar problem
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limit of x*tan(1/x) as x goes to infinity, L'Hospital's Rule
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Area Enclosed by a Polar Curve, Calculus 2
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The Formula for Taylor Series
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Graph of log base 2 of x, algebra 2 & precalculus tutorial
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Comparison test for improper integrals ex 3, integral of 1/ln(x) from e to inf, calculus 2 tutorial
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Rational Functions: find the domain
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how to convert fractions to binary point
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Integral of 1/(x^2+1) from -inf to inf, Contour Integral
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Q309, Deriving the Centroid Formula (3 parts)
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A Cambridge Integral Experience
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Q47, Integral of csc(x)sec(x)
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Series of (1-1/n)^(n^2), root test
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(Q10.) So, you think you can take the derivative?
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1^inf indeterminate form (Quiz Solution)
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Math for fun, sin(sin(z))=1
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Q14 Rationalize the denominator with square root
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integral of sqrt(x)*e^(-x) from 0 to inf
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(Q20) Sample #1, Math 141/146 common final, Glendale community college thumbnail
(Q20) Sample #1, Math 141/146 common final, Glendale community college
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Top 5 reasons of getting the Casio fx-115ES PLUS (perfect for EIT, FE exams, back to shool) thumbnail
Top 5 reasons of getting the Casio fx-115ES PLUS (perfect for EIT, FE exams, back to shool)
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Algebra Q2, ACT Compass Official Sample Test Questions
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Hard Integral SOLVED!
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Graphing y=-3^x
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convert parametric to cartesian (an exam problem), x=sec(t), y=csc(t)
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System of equations with 3 variables.
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Error Bound Formulas for midpoint and trapezoid rules, sect7.7#19b
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Understand Comparison Theorem For Improper Integral Ex3
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Limit Quiz, Q1 & Q2
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Points of inflection from the graphs of f, f' or f''
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A triple square root problem (Berkeley mini math tournament)
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Integral of 1/(x^3+1) from 100 integrals
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Separable Differential Equation! 2.2#21 thumbnail
Separable Differential Equation! 2.2#21
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Complex definitions of sine and cosine
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4 popular ways to factor trinomials ax^2+bx+c (including slide & divide)
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Q6, integral of 1/sqrt(1-x^2) vs. integral of x/sqrt(1-x^2)
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Rule of Exponent Ex#5 thumbnail
Rule of Exponent Ex#5
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Integral product rule?
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integral of ln(sqrt(x+1)+sqrt(x)) by trig sub thumbnail
integral of ln(sqrt(x+1)+sqrt(x)) by trig sub
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Yes, it's an 8. (what's next?)
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the most DISLIKED math notation
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Q15 MET115 MCQ Strategy
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Optimization, Line cuts off the least area from the first quadrant
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Q7, integral of sin(x)*sec^3(x) vs. integral of tan(x)*sec^3(x)
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Q26, polynomial division (long division)
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Calculating Work, pumping water out of a circular swimming pool
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Evaluate all trig functions from a given point on the terminal side ex4
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sin(10°)sin(30°)sin(50°)sin(70°) = ? No calculator!
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MET#49, Solving a Rational Equation thumbnail
MET#49, Solving a Rational Equation
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Regular math vs competition math
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Not -1/12
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Q10, exponential decay equation (with decay rate)
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A Putnam Exam Integral from 1980
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fun integral battle#4: rethink factoring... thumbnail
fun integral battle#4: rethink factoring...
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Limit comparison test vs direct comparison test, calculus 2 tuturial
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Calculus Teacher vs. Power Rule Student
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Differential equation in the form of G(ax+by), intro and example
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limit of tan^-1(1/(x-4)) as x goes to 4, calculus 1 tutorial
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Integral of sec^3x, calculus 2 tutorial
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inverse laplace transform, example 3
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