   Chapter 1.5, Problem 21E ### Single Variable Calculus: Early Tr...

8th Edition
James Stewart
ISBN: 9781305270343

#### Solutions

Chapter
Section ### Single Variable Calculus: Early Tr...

8th Edition
James Stewart
ISBN: 9781305270343
Textbook Problem

# Find a formula for the inverse of the function.21. f ( x ) = 1 + 2 + 3 x

To determine

To find: the formula for the inverse of the function f(x)=1+2+3x .

Explanation

Let the given function as y=1+2+3x .

Solve this equation for x as follows.

y1=2+3x(y1)2=2+3xy22y+1=2+3xx=y22y13

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