Question

Danda a funçao f(x)=2x-6, faça oque se pede:
a) Calcule a raiz d funçao
b) Calcule f(-1), f(0), f(1)

Answer 1

a) Raiz da função
2x - 6 = 0
2x = 6
x = 6/2
x = 3 "A raiz é 3"

b)
f(-1)=2x - 6 = 2.(-1)-6 = -2 - 6 = -8
f(0)=2x - 6 = 2.(0)-6 = 0 - 6 = -6
f(1)=2x - 6 = 2.(1)-6 = 2 - 6 = -4