Question

Dada função f(x) = x³ - x . Determine:

a) f(2)=
b) f(-1)=
c) f(5)=
d) f(1/2)=

Answer 1

a) f(2) = 2³ - 2 = 8 - 2 = 6
b)f(-1) = (-1)³ - (-1) = - 1 + 1 = 0
c)f(5) = 5³ - 5 = 125 - 5 = 120
d)f(½) = (½)³ - ½ = ⅛ - ½ = -⅜