Diketahui fungsi f(x)=2x + 3 dan fungsi g(x)=3x2 - 2x + 5 nilai (g o f)(-2) adalah..

Jawab

f(x) = 2x + 3
f(-2) = 2(-2) + 3
f(-2) = -1

(gof)(-2)
= g(f(-2))
= g(-1)
= 3(-1)² - 2(-1) + 5
= 11