tlong jawab pake cara gan

Definisi Invers
f(x) = y maka f^-1 (y) = x

Jadi

f(x + 2) = g(2x - 1)
maka
f^-1(g(2x - 1)) = x + 2 .... (1)

Misal
g(2x - 1) = y
maka
g^-1 (y) = 2x - 1
g^-1 (y) + 1 = 2x
x = (1/2) g^-1 (y) + (1/2)

Substitusikan ke pers (1)

f^-1(g(2x - 1)) = x + 2
f^-1 (y) = (1/2) g^-1 (y) + (1/2) + 2
f^-1 (y) = (1/2) g^-1 (y) + (5/2)
f^-1 (y) = (1/2) [g^-1 (y) + 5]
f^-1 (x) = (1/2) [g^-1 (x) + 5]

^ = pangkat