(fog)(x)=4x+6 f(x)=2x-4 a.fungsi g(x) b.g(10)

Bab Fungsi Komposisi
Matematika SMA Kelas X

a] (fog) (x) = 4x + 6
    f(g(x)) = 4x + 6 
    2 g(x) - 4 = 4x + 6
    2 g(x) = 4x + 6 + 4
    g(x) = (4x + 10) / 2
    g(x) = 2x + 5

b] g(x) = 2x + 5
    g(10) = 2 . 10 + 5
    g(10) = 20 + 5   
    g(10) = 25