Question

Misal f(x) = 3 akar 2^x-2 dan g(x) = 4x. jika (fog)(a) = 12, maka a =

Answer 1

(fog)(a) = (fog)(a) = 12
3 akar 2(4x) - 2 = 12
3 akar 8x - 2 = 12
akar 8x - 2 = 12/3
(akar 8x - 2)^2 = (4)^2
8x -2 = 16
8x = 16 +2
× = 18/8
a = 18/8