Question

F(x)=x-1 dan g(x)=3x+4
tentukan (g^-1°g^-1)(x)

Answer 1

Misal g(x) = y
y = 3x+4
y-4 = 3x
x = y-4 /3
g invers x = x-4 /3
g invers o g invers (x) = g invers (g invers x)
= g invers (x-4 /3)
= (x-4/3) -4 / 3
= (x-4/3) - 4(3/3) /3
= (x-4/3) - (12/3) / 3
= (x - 4 - 12)/3 /3
= x - 16/3 /3
= x - 16/3 × 3
= x - 16
semoga dapat di pahami