Respostas

2014-08-16T19:10:28-03:00
Seja  f(x) = 1 - 5x . Então:
a)  f(0) = 1 - 5.0 = 1  ⇒  f(0) = 1
b)  f(1/5) = 1 - 5.1/5 = 1 - 5/5 = 1 - 1 = 0  ⇒  f(1/5) = 0
c)  f(-1) = 1 - 5.(-1) = 1 + 5 = 6  ⇒  f(-1) = 6 
d)  f(-1/5) = 1 - 5.(-1/5) = 1 + 1 = 2  ⇒  f(-1/5) = 2
1 5 1