Question

I have already found the answers for A, B, and C but am confused on how to get the answer for D or (g•g).My question is, how to find the composite function (g•g)(x)?

Answer 1

we have the function

`g(x)=√(x-1)`
`\begin{gathered} (gog)(x)=g(g(x)) \\ (gog)(x)=\sqrt{√(x-1)-1} \end{gathered}`