Learn how to find the formula of the inverse function of a given function. For example, find the inverse of f (x)=3x+2.

Now, just out of interest, let's graph the inverse function and see how it might relate to this one right over here. So if you look at it, it actually looks fairly identical.

Sal explains what inverse functions are. Then he explains how to algebraically find the inverse of a function and looks at the graphical relationship between inverse functions. Created by Sal Khan.

A function will map from a domain to a range and you can think of the inverse as mapping back from that point in the range to where you started from. So one way to think about it is, we want to come up with …

Learn what the inverse of a function is, and how to evaluate inverses of functions that are given in tables or graphs.

Practice finding the formula of the inverse function of a given linear function.

The definition of an inverse function is a function that undoes another function. Say you have a function f (x) that takes in x and outputs y. f inverse of x would take in y and output x. This basically means the …

Inverse functions introduction Learn Intro to inverse functions Intro to inverse functions Inputs & outputs of inverse functions Graphing the inverse of a linear function

The conventional notation for f inverse is f inverse of x, so it is important to get used to seeing it like that and not be confused between the x in the f inverse function and the x in the original function.

Sal explains that if f (a)=b, then f ⁻¹ (b)=a, or in other words, the inverse function of f outputs a when its input is b.