If \[\phi (x)\] is a differentiable function, then the solution of the differential equation\[dy+\{y\phi '(x)-\phi (x)\phi '(x)\}dx=0\] is

\[y\phi (x)={{\{\phi (x)\}}^{2}}+c\]

\[y=\{\phi (x)-1\}+c{{e}^{-\phi (x)}}\]

\[y{{e}^{\phi (x)}}=\phi (x){{e}^{\phi (x)}}+c\]

If \[\phi (x)\] is a differentiable function, then the solution of the

1.	If \[\phi (x)\] is a differentiable function, then the solution of the differential equation\[dy+\{y\phi '(x)-\phi (x)\phi '(x)\}dx=0\] is
A.	\[y=\{\phi (x)-1\}+c{{e}^{-\phi (x)}}\]
B.	\[y\phi (x)={{\{\phi (x)\}}^{2}}+c\]
C.	\[y{{e}^{\phi (x)}}=\phi (x){{e}^{\phi (x)}}+c\]
D.	None of these
Answer» B. \[y\phi (x)={{\{\phi (x)\}}^{2}}+c\]

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If \[\phi (x)\] is a differentiable function, then the solution of the differential equation\[dy+\{y\phi '(x)-\phi (x)\phi '(x)\}dx=0\] is

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