jika fungsi g(x)=2x-4 dan(gof)=4x kuadrat-20x+26,nilai f(-1)

gof(x) = g(f(x))
4x² - 20x + 26 = 2f(x) - 4
2f(x) = 4x² - 20x + 30
f(x) = 2x² - 10x + 15
f(-1) = 2 + 10 + 15 = 27

Bab Fungsi
Matematika SMA Kelas X


2 f(x) - 4 =
4x^2 - 20x + 26
2f(x) = 4x^2 - 20x + 30
f(x) = 2x^2 - 10x + 15

f(-1)
= 2.(-1)^2 - 10(-1) + 15
= 2 + 10 + 15
= 27

Jangan lupa jadikan terbaikkk
Semoga membantu;)