F(x)=x+2,g(x)=3x h(x)=x² Tentukan (gof)(x) (fog)(x)

Jawabannya :
Matematika - Fungsi Invers
f(x) = x+2
g(x) = 3x
h(x) = x^2

(gof)(x) = g[f(x)]
(gof)(x) = g[x+2]
(gof)(x) = 3(x+2)
(gof)(x) = 3x+6

(fog)(x) = f[g(x)]
(fog)(x) = f[3x]
(fog)(x) = 3x +2

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