Misal diketahui f(x)=x^3-2x^2-9; g(x)=x^2-2x-15 dan k(x)

h(3) = -12

Pembahasan

Untuk mencari nilai h(3), kita perlu menghitung nilai f(3) dan g(3) terlebih dahulu.

f(x) = x³ - 2x² - 9
f(3) = (3)³ - 2(3)² - 9
f(3) = 27 - 2(9) - 9
f(3) = 27 - 18 - 9
f(3) = 0

g(x) = x² - 2x - 15
g(3) = (3)² - 2(3) - 15
g(3) = 9 - 6 - 15
g(3) = 3 - 15
g(3) = -12

h(x) = k(x)f(x) + g(x)
h(3) = k(3)f(3) + g(3)
h(3) = k(3)(0) + (-12)
h(3) = 0 - 12
h(3) = -12