Question

02. Dada a função f(x) = xl-5x + 4, determine:
a) f(2)
b) f(-1)
c) f(0)​

Answer 1

Resposta:

f(x) = x - 5x + 4

f(2) = 2 - 5 . 2 + 4

f(2) = 2 - 10 + 4

f(2) = 6 - 10

f(2) = - 4

f(x) = x - 5x + 4

f(-1) = - 1 - 5 . ( - 1) + 4

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

f(-1) = - 1 + 9

f(-1) = + 8

f(x) = x - 5x + 4

f(0) = 0 - 5 . 0 + 4

f(0) = 0 - 0 + 4

f(0) = 4