Question

determine o domínio f(x) = 2x - 7?

Answer 1

Resposta:

f(x)=2x-7

f(2)=2.2-7

f(2)=4-7

f(2)=-3

f(-2)=2x-7

f(-2)=2.(-2)-7

f(-2)=-4-7

f(-2)=-11

f(2)+f(-2)/2

-3+(-11)/2

-14/2=-7