Question

F(x) = 2x − 1, então f(0) + f(−1) + f(3) é igual a:

Answer 1

f(x) = 2x - 1

f(-1) = 2 . (-1) - 1

f(-1) = - 2 - 1

f(-1) = - 3

f(x) = 2x - 1

f(0) = 2 . 0 - 1

f(0) = 0 - 1

f(0) = - 1

f(x) = 2x - 1

f(3) = 2 . 3 - 1

f(3) = 6 - 1

f(3) = 5

f(0) + f(-1) + f(3) = - 1 + (-3) + 5 = - 1 - 3 + 5 = - 4 + 5 = 1