F(x) = 2x + 1 dan g(x) = 5x-2 tentukN komposisib(f o g)(x)

fog (x) = f(g(x))
fog (x) = 2(5x-2) + 1
fog (x) = 10x - 4 + 1
fog (x) = 10x -3

Diketahui :
f (x) = 2x + 1
g (x) = 5x - 2

Ditanya : fog (x) ?

Dijawab :
fog (x)
= f (g (x))
= f (5x - 2)
= 2 (5x - 2) + 1
= 10x - 4 + 1
= 10x - 3

Jadi, komposisi fog (x) adalah 10x - 3