1. To find the inverse of a function
Switch the x and y
Solve for y

2. Example 1
Means the inverse of g(x)

3. Example 2
Means the inverse of g(x)

4. Example 2 Continued
Step 1 Find the inverse.
Rewrite the function using y instead of f(x).
Switch x and y in the equation.
Cube both sides.
Simplify.
Isolate y.

5. Check It Out! Example 2 Continued
Step 1 Find the inverse.
y = x3 – 2
Rewrite the function using y instead of f(x).
x = y3 – 2
Switch x and y in the equation.
x + 2 = y3
Add 2 to both sides of the equation.
Take the cube root of both sides. 3
x + 2 = y 3
x + 2 = y
Simplify.