jika f(x) 5x+2 dan g(x)=-2x+1 maka (fog)(-2) pakai cara!

Materi : Fungsi Komposisi


f(x) = 5x + 2
g(x) = -2x + 1

fog(x)
= f(g(x))
= f(-2x + 1)
= 5(-2x + 1) + 2
= -10x + 5 + 2
= -10x + 7

fog(-2) = -10(-2) + 7
           = 20 + 7
           = 27