for the given functions: f(x)=2x and g(x)= 1/2x show that (fog)(x) = (gof)=x

Question

 how do you start the problem because I am having difficulty starting it off

Answer 1

For a composite function, you basically run one function through the other function.

For (fog), put g(x) into f(x). So, fog=2(1/2x) or just x.