Bila f(x) = x2+7x dan g(x) = 4x+1, maka (gof)(- 1) = ....

Kelas 10 Matematika
Bab Fungsi Komposisi

(gof) (x) = g (x² + 7x)
(gof) (x) = 4 (x² + 7x) + 1
(gof) (-1) = 4 ((-1)² + 7 . (-1)) + 1
(gof) (-1) = 4 (1 - 7) + 1
(gof) (-1) = 4 . (-6) + 1
(gof) (-1) = -24 + 1
(gof) (-1) = -23