jika diketahui f(x)=4x dan f(g(x)=-x/2+1,maka nilai g(x) adalah.. a.1/4(x-1) b.1/4(-x+2) c.1/8(-x-2) d.1/8(-x+2) e.1/8(x-2)

(fog)(x) = -x/2 + 1
4(g(x)) = -x/2 + 2/2
g(x) = -x/8 + 2/8
g(x) = 1/8 (-x + 2)

Jawaban D

Diketahui :
f (x) = 4x
f (g (x)) = -x/2 + 1

Ditanya : g (x) ?

Dijawab :
f (g (x)) = -x/2 + 1
4 (g (x)) = -x/2 + 1
4 (g (x)) = -x/2 + 2/2
g (x) = ((-x + 2) / 2) / 4
g (x)= (-x + 2) / 2 x 1/4
g (x) = (-x + 2) / 8
g (x) = 1/8 (-x + 2)

Jawabannya adalah D. 1/8 (-x + 2)