Respostas

2014-01-05T19:18:48-02:00
Vx = -b/2a
2 = -p/2q
4p = -p
q = -4p


f(2) = 2²+p.2 + q
16 = 4 + 2p +q
12 = 2p + q

2p +q = 12 (substitui)

2p -4p = 12
-2p = 12
p = -6

4p = 6
p = 6/4