Question

Dada a função f definida por f(x)=x²+ 3x - 4.
Ache f(x + h)

Answer 1

f(x+h) = (x² +2xh + h²) + 3x + 3h - 4 

f(x + h) = x² + 2xh + 3x + 3h - 4 

f(x + h) = x² + x(2h +3) + 3h - 4

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11/10/2016
Sepauto 
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Answer 2

f(x + h) = (x + h)² + 3.(x + h) - 4

f(x + h) = x² + 2xh + h² + 3x + 3h - 4

f(x + h) = x² + 3x - 4 + h² + 2xh + 3h