Question

Diketahui f(x) = 3x - 10 dan g(x) = 4x + n. agar (fog)(x) = (gof)(x),maka niai n

Answer 1

Menurut saya kayak gini
(fog)(x) =(gof)(x)
f(g(x))   = g(f(x))
f(4x+n) = g(3x-10)
3(4x+n) - 10 = 4(3x-10) + n
12x + 3n - 10 = 12x - 40 + n
2n = -30
n = -15