Question

Diketahui f(x)=2x²+3x+1
g(x)=(x+3)
tentukan (f ○ g)(x) dan (g○f)(x)?

Answer 1

Verified answer

Jawab

fungsi

f(x)= 2x² + 3x + 1
g(x)=  x+ 3

fog(x) = f {g(x)} = f (x+ 3)
fog(x) = 2(x +3)² + 3(x + 3) + 1
fog(x) = 2(x² + 6x + 9) + 3x +9 + 1
fog(x)= 2x² +12x + 18 + 3x + 10
f0g(x) = 2x² + 15x + 28

gof(x)= g {f(x)} = g (2x² + 3x + 1)
gof(x)= 2x² + 3x + 1 + 3
gof(x) = 2x² + 3x + 4