If \[{{x}^{m}}{{y}^{n}}={{(x+y)}^{m+n}}\], then \[dy/dx\]is equal to

1.	If \[{{x}^{m}}{{y}^{n}}={{(x+y)}^{m+n}}\], then \[dy/dx\]is equal to
A.	\[\frac{y}{x}\]
B.	\[\frac{x+y}{xy}\]
C.	\[xy\]
D.	\[\frac{x}{y}\]
Answer» B. \[\frac{x+y}{xy}\]

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If \[{{x}^{m}}{{y}^{n}}={{(x+y)}^{m+n}}\], then \[dy/dx\]is equal to

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