If f(x)=4x^2 and g(x)=2/x, find [g x f](x).

Question

Answer: -1/2x^2

2) Are f(x)=1/2x+5 and g(x)=2x-5 inverses of each other?

Answer: no

Answer 1

I am not familiar with the notation [g x f](x)

2) is correct