f(x) = 2x + 1
f(-2) + f(-1) + f(0) + f(1) = ?
f(-2) = 2 * (-2) + 1
f(-2) = - 4 + 1
f(-2) = - 3
f(-1) = 2 * (-1) + 1
f(-1) = - 2 + 1
f(-1) = - 1
f(0) = 2 * 0 + 1
f(0) = 0 + 1
f(0) = 1
f(1) = 2 * 1 + 1
f(1) = 2 + 1
f(1) = 3
- 3 + (-1) + 1 + 3 =
= - 3 - 1 + 1 + 3 =
= - 4 + 1 + 3 =
= - 3 + 3 =
= 0
* Sper că te-am ajutat! *
