Question

Bisa bantuin jawab soal ini?
diketahui f(x) = 2x - 2 dan g(x) = x^2 - 1
berapa fog(x+1)?

Answer 1

(fog)(x)=2(x^2-1)-2
=2x^2-2-2
=2x^2-4

(fog)(x+1)=2(x+1)^2-4
=2(x^2+2x+1)-4
=2x^2+4x+2-4
=2x^2+4x-2

Answer 2

F(x)= 2x-2
g(x)= x^2-1

f(g(x))
f(x^2-1)=
2x^2-4

fog(x+1)=-4 2(x+1)^2=2x^2+4x-2