Question

Dada a função f(x) = 2x ao cubo - 4x + 2, calcule f(1) -f(3).

Junção

Answer 1

f(x) = 2x³ - 4x + 2 calcule f(1) -f(3).

f(1)=2.1³ -4.1+2
f(1)=2.1 -4+2
f(1)=2-4+2
f(1)=0

f(3)=2.3³ - 4.3 + 2
f(3)=2.27-12+2
f(3)=54-12+2
f(3)=44

calcule f(1) -f(3)
0-44 = -44