Wetzel

Math 140

5.3 – Inverse Functions

Review of Inverse Operations –

Definition of a Function –

Definition of an Inverse Function –

            Horizontal Line Test –

            Graph of an Inverse Function –

Finding an Inverse Function –

            Steps:

1.)  Make sure the function is one-to-one.

2.)  Replace  with y.

            3.)  Interchange x and y.

            4.)  Solve for y.

            5.)  Replace y with

Ex.:  Find the inverse of f(x).

1.)                                                         2.)                    

HW:  p. 347 #1-5odd(b only), 9-12all, 29-35odd