Question

Dada a função f(x) = x3 – 8x, encontre f(-2) e f(1):

Answer 1

f(x) = x³ - 8x
f(-2) = (-2)³ - 8(-2) = -8  - (-16) = -8 + 16 = 8
Logo, f(-2) = 8

f(1) = 1³ - 8(1)
f(1) = 1 - 8 = -7
Logo, f(1) = -7