If \[{y}'=\frac{x-y}{x+y}\], then its solution is [MP PET 2000]

If \[{y}'=\frac{x-y}{x+y}\], then its solution is �

1.	If \[{y}'=\frac{x-y}{x+y}\], then its solution is [MP PET 2000]
A.	\[{{y}^{2}}+2xy-{{x}^{2}}=c\]
B.	\[{{y}^{2}}+2xy+{{x}^{2}}=c\]
C.	\[{{y}^{2}}-2xy-{{x}^{2}}=c\]
D.	\[{{y}^{2}}-2xy+{{x}^{2}}=c\]
Answer» B. \[{{y}^{2}}+2xy+{{x}^{2}}=c\]

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If \[{y}'=\frac{x-y}{x+y}\], then its solution is [MP PET 2000]

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