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

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.

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

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.

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 …

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 …

The inverse of a function ƒ is a function that maps every output in ƒ's range to its corresponding input in ƒ's domain. We can find an expression for the inverse of ƒ by solving the equation 𝘹=ƒ …

Practice Up next for you: Model with function combination Get 3 of 4 questions to level up!

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

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 …