Question

F(x)=2x and g(x)= sqrt(x+1)Find (fg)(x)

Answer 1

First, let us define what (fg)(x) is:

`(fg)(x)=f(x)* g(x)`

Given:

`f(x)=2x`
`g(x)=\sqrt[]{x+1}`

So the solution to (fg)(x) will be:

`\begin{gathered} =2x*\sqrt[]{x+1} \\ =2x\text{ }\sqrt[]{x+1} \end{gathered}`