diketahui f(x)=8x2+2x+3 g(x)=x+1 tentukan fogx dan gof2

!!! terlampir ........

Materi : Fungsi Komposisi
Kelas : XI - SMA K.13 ( WAJIB )


f(x) = 8x^2 + 2x + 3
g(x) = x + 1

f o g (x) = f(g(x))
f o g (x) = 8(x + 1)^2 + 2(x + 1) + 3
f o g (x) = 8(x^2 + 2x + 1) + 2x + 2 + 3
f o g (x) = 8x^2 + 16x + 8 + 2x + 5
f o g (x) = 8x^2 + 18x + 13

g o f (x) = g(f(x))
g o f (x) = (8x^2 + 2x + 3) + 1
g o f (x) = 8x^2 + 2x + 4

g o f (2) = 8(2)^2 + 2(2) + 4
g o f (2) = 8(4) + 4 + 4
g o f (2) = 32 + 8
g o f (2) = 40

SEMOGA MEMBANTU ^_^