Show that the functions are inverse functions of each other.                                  f(x) = 2x3 − 1 and g(x) =3√( x + 1)/ 2

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter10: Exponential And Logarithmic Functions
Section10.1: Finding Composite And Inverse Functions
Problem 10.13TI: Verify the functions are inverse functions. f(x)=4x3 and g(x)=x+34.
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Show that the functions are inverse functions of each other.                                  f(x) = 2x3 − 1 and g(x) =3√( x + 1)/ 2

Expert Solution
Step 1

Given:

f(x)=2x31g(x)=x+123

Step 2

The inverse of the given function can be found in the below steps:

  • Replace f(x) by y

y=2x31

 

  • Interchange y and x

x=2y31

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