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

These are 1-step equations. They don't get any simpler. You solve for the variable by using the opposite operation to move any number to the other side of the equation (away from the variable).

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.

For example, addition and subtraction are inverse operations, and multiplication and division are inverse operations. Each operation does the opposite of its inverse.

Multiplication and division are inverse operations Here's an example of how division is the inverse operation of multiplication: If we start with 7, multiply by 3, then divide by 3, we get back to 7: 7 ⋅ 3 ÷ …

Addition and subtraction are inverse operations Inverse operations are opposite operations that undo or counteract each other.

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 …

What is a modular inverse? In modular arithmetic we do not have a division operation. However, we do have modular inverses.

Practice evaluating the inverse function of a function that is given either as a formula, or as a graph, or as a table of values.

So at first when you start doing these functions and inverse of functions it looks a little confusing, hey, I'm going back and forth, but you just have to remember a function maps from one set of numbers to …