1.

Solve (2xy-y²-y)dx+(2xy-x²-x)dy=0​

Answer»

ong>Answer:

answer is 12

Step-by-step explanation:

becauseGiven, d(X

2

y)=d(XY)+d(xy

2

)

⇒x

2

y=xy+xy

2

+c

At x=1,y=1 ⇒ c = -1

⇒x

2

y=xy+xy

2

−1⇒y=−y+y

2

−1

∴y

2

+2y+1=0⇒y=−1

∴12y∣y(−1)∣=12


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