W1_L7: Functions - domain codomain range & properties of mappings

Transcript

So, closely related to relations are functions. So, what is the function? A function is a rule that tells us how to convert an input into an output. So, for instance suppose we want a function that given an x returns as x square, then this is one way to write the rule, we write this symbol which says x maps to x square; given an x it is transformed... Read More