jika f(x) =3x-5 dan g(x) =1-x. Nilai dari (f•g) (2) adalah

Bab Fungsi

(f o g)(2)
= f(g(2))
= f(1 - 2)
= f(-1)
= 3(-1) - 5
= -3 - 5
= -8

fog x= f ( 1 - x ) = 3( 1 - x ) -5 = 3 - 3x -5 = -3x -2 .... fog ( 2) = -3 . 2 - 2 = -6 -2 = -8