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Find the inverse of the function ,f(x)=6x-74

Short Answer

Expert verified

The inverse of,f(x)=6x-74is

f-1(x)=x4+76

Step by step solution

01

Given information

Given the functionf(x)=6x-74

02

Replace f(x) with y and then x,y

Replacing, we get

f(x)=6x-74y=6x-74x=6y-74x4=6y-7x4+76=y

03

Substitute f-1(x) for y

Substituting, we get

f-1(x)=x4+76

04

Verify f(f-1(x))=x

Substituting, we get

f(x4+76)=6(x4+76)-74f(x4+76)=x4+7-74f(x4+76)=x44f(x4+76)=x

05

Verify f-1(f(x))=x

Substituting, we get

f-1(6x-74)=6(x4+76)-74f-1(6x-74)=x4+7-74f-1(6x-74)=x44f-1(6x-74)=x

So these are inverses

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