Sendo a função y = x ² - 3x – 2 , calcule: a) ( F(-1) + F(1/2))
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3/2
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f(-1) = (-1)^2 - 3.(-1) -2
f(-1) = 1 +3 -2
f(-1) = 2
f(1/2) = (1/2)^2 -3.(1/2) -2
f(1/2) = 1/4 - 3/2 -2
f(1/2) = 1/4 -6/4 - 8/4
f(1/2) = -13/4
f(-1) + f(1/2) = 2 + (-13/4) = 8/4 - 13/4 = -5/4
f(-1) = 1 +3 -2
f(-1) = 2
f(1/2) = (1/2)^2 -3.(1/2) -2
f(1/2) = 1/4 - 3/2 -2
f(1/2) = 1/4 -6/4 - 8/4
f(1/2) = -13/4
f(-1) + f(1/2) = 2 + (-13/4) = 8/4 - 13/4 = -5/4
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