Question

Diketahui f(x)=3x+2 dan g(x)=2(4x-1). Fungsi (f-g)(x) adalah .. (pakai cara)

Answer 1

FoG (x) kan?
G(x)=2(4x-1) = 8x-2
(FoG)(x) = f(8x-2)
--- = 3(gx)+2
---- = 3(8x-2) + 2
----= 24x-6+2
FoG(x) = 24x-4

Answer 2

F(x) = 3x + 2 dan g(x) = 8x - 2
(f o g)(x) = artinya g dimasukan ke f(x) d dpt
3(8x - 2) + 2 
24x - 6 + 2 = 24x - 4