Sea la ecuacion diferencial dy/dx=xy-e^-y diga cual de la funciones f(x, y) es una solución de la ecuación a) f(x, y)=xy-e^-y
b) f(x, y)=(xy/2)-e^-y
c) f(x, y)=(xy/2)+e^-y

The answer is b.a, c, and d are not correct

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