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Question

The solution of the differential equation (kxy2)dy=(x2ky)dx is

A
x3y3=3kxy+C
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B
x3+y3=3kxy+C
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C
x2y2=2kxy+C
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D
x2+y2=2kxy+C
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E
x3y2=3kxy+C
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Solution

The correct option is A x3+y3=3kxy+C
We have (kxy2)dy=(x2ky)dy
k(xdy+ydx)=x2dy+y2dx
kd(xy)=13d(x3+y3)
Integrating on both sides, we get
kxy=x3+y33+C1
x3+y3=3kxy+C

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