Nilai (fogoh)(-1)=...

Bab Fungsi Komposisi
Matematika SMA Kelas X

(fogoh) (-1) = ?

h(x) = 1 - x
h(1) = 1 - 1
       = 0

g(x) = x² + 2x - 8
g(0) = 0² + 2 . 0 - 8
       = -8

f(x) = 2x - 5
f(-8) = 2 . (-8) - 5
        = -16 - 5
        = -21

jadi, (fogoh) (-1) = -21