Ditentukan oleh g(x)=x2-1 dan h(x)=1-3x..hitung lah (goh)(-3)

Materi : Fungsi Komposisi

g(x) = x^2 - 1
h(x) = 1 - 3x

(g o h)(-3) = ?

(g o h)(x) = (1 - 3x)^2 - 1
(g o h)(x) = 1 - 6x + 9x^2 - 1
(g o h)(x) = 9x^2 - 6x

(g o h)(-3) = 9(-3)^2 - 6(-3)
(g o h)(-3) = 9(9) + 18
(g o h)(-3) = 81 + 18
(g o h)(-3) = 99

Salam .....