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Let f(x) = 7x + 5 and g(x) = x + 1. If h(x) = f(g(x)) , then what is the inverse of h(x)?

 Jun 10, 2021
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f(x) = 7x + 5

and g(x) = x + 1

 

⇒ h(x)=f(g(x))

              =f(x+1)

              =7x+7+5

              =7x+12

 

In order to find  h1(x) 

Let  y=h(x)

       y=7x+12

       x=y127

⇒ h1(x)=x127

 

   Thus, inverse of h(x) is x127

 

 

~Amy 

 Jun 10, 2021
edited by amygdaleon305  Jun 10, 2021

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