matematika kelas 10 fungsi invers

Bab Fungsi Komposisi
Matematika SMA Kelas X

(fog) (x) = 2x² - 19x + 51
f(x - 4) = 2x² - 19x + 51
f(x + 4 - 4) = 2(x + 4)² - 19 (x + 4) + 51
f(x - 1) = 2 (x - 1 + 4)² - 19(x - 1 + 4) + 51
f(x - 1) = 2 (x² + 6x + 9) - 19x - 57 + 51
f(x - 1) = 2x² + 12x + 18 - 19x - 6
f(x - 1) = 2x² - 7x + 12