Diketahui fungsi f (x)=2x+1 dan g(x) =x2-4x. Komposisi (fog)(x)=

FUNGSI .
Dik : • f ( x ) = 2x+1
• g( x ) = x^2 - 4x
Dit : ( f○g ) (x) ?
jawab :
(f○g) (x) = f(g)
= (x-4x)^2 + 2(x-4x)+1
= x^2 -8x +16 + 2x -8x+1
= x^2-8x-6x + 16 + 1
= x^2 -16x + 17


semoga membantu

(fog) (x) = f(g(x))
= f(x²-4x)
= f(2x+1)²-4(2x+1)
= 4x²+4x+1-8x-4
= 4x²-4x-3
itu jawabannya semoga membantu