166. Diberikan fx) = 4x - 5 dan g(x) = 4x + 3. Rumus (fog)-¹(x) = ...
a.x-6/16
b.x-7/16
c.x-8/16
d.x-9/16
e.x-10/16![]()
a.x-6/16
b.x-7/16
c.x-8/16
d.x-9/16
e.x-10/16
Diketahui
f(x) = 4x - 5
g(x) = 4x + 3
(fog)(x) = f(g(x))
= 4x - 5
= 4(4x + 3) - 5
= 16x + 12 - 5
= 16x + 7
Invers dari (fog)(x) = 16x + 7
(fog)(x) = 16x + 7
y = 16x + 7
-16x = -y + 7
16x = y - 7
x = y - 7 / 16
(fog)^-1 (x) = x - 7 / 16 (b)
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