Question

Given f(x)= x3 and g(x) = 2x + 7, express
(fºg)(x)'as a function of x.

Answer 1

(f∘g)(x)=(2x+7)^3

Explanation:

substitute g(x) in f(x)

(f∘g)(x)=f(g(x))=f(2x+7)=(2x+7)^3=(2x+7)^3