November 2019 1 117 Report
O domínio da função f (x, y) = 5x²y+xy-3 é dado pelo conjunto:
A) Df={(x, y) ∈ IR^2| x> 0 e y>0})
B) Df={(x, y) ∈ IR^2| x ≠ 0 e y≠0}
C) Df={(x, y) ∈ IR^2| x< 0 e y>0}
D) Df={(x, y) ∈ IR^2| x> 0 e y≠0}
E) Df={(x, y) ∈ IR^2|= IR^2
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