Respostas

2013-08-18T15:48:29-03:00
A) f (0) = 2*0² - 1
=> f(0) = 0 - 1 = -1

b) f(5) = 2*5² -1
=> f(5) = 2*25 - 1 = 49

c) f(-3) = 2*(-3)² - 1
=> f(-3) = 2*9 - 1 = 17

d) f(-5) = 2*(-5)² - 1
=> f(-5) = 2*25 - 1 = 49