Respostas

2013-12-11T16:45:54-02:00
F(-1) = (-1)² + 3 (-1) + 4
f(-1) = 1 - 3 + 4
f(-1) = 5 - 3
f(-1) = 2

Se for f(1):
f(1) = (1)² + 3 (1) + 4
f(1) = 1 + 3 + 4
f(1) = 5 + 3
f(1) = 8

Bom estudo! :)

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