Question

Dada a função do1 grau f (x)= 1-5x determina: A) f(0) B) (f-1) C) f(1/5) D) f(-1/5)

Answer 1

Resposta:

f(x) = 1 - 5x

a) f(0):

f(0) = 1 - 5.0

f(0) = 1 - 0

f(0) = 1

b) f(-1):

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

f(-1) = 1 - (-5)

f(-1) = 1 + 5

f(-1) = 6

c) f(1/5):

f(1/5) = 1 - 5.1/5

f(1/5) = 1 - 1

f(1/5) = 0

d) f(-1/5):

f(-1/5) = 1 - 5.-1/5

f(-1/5) = 1 - (-1)

f(-1/5) = 1 + 1

f(-1/5) = 2