# To find the value of f − 1 ( 18 )

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 2.7, Problem 22E

1

To determine

## To find the value of f−1(18)

Expert Solution

Value of f1(18) is 5

### Explanation of Solution

Given: f(5)=18

Calculation:

F(5)=18

f1(18)=5

If f is a one-to-one function, the definition says that if f takes x to y , then f1 takes y back to x

2

To determine

### To find the value of f(2)

Expert Solution

Value of f(2) is 4

### Explanation of Solution

Given: f1(4)=2

Calculation:

f1(4)=2

f(2)=4

If f is a one-to-one function, the definition says that if f takes x to y , then f1 takes y back to x

### Have a homework question?

Subscribe to bartleby learn! Ask subject matter experts 30 homework questions each month. Plus, you’ll have access to millions of step-by-step textbook answers!