Quiz 5

Checkpoint Quiz 5.2

Name:

1. Let f (x) = 3x

x + 1 .

(a) Assuming f is one-to-one, find a formula for f−1(x).

(b) Check your answer to part (a) using function composition.

(c) Find the range of f .

2. Explain why a function with more than one x-intercept cannot be invertible.