If for the differential equation \[y'=\frac{y}{x}+\phi \left( \frac{x}{y} \right),\] the general solution is \[y=\frac{x}{\log \left| Cx \right|},\] then \[\phi (x/y)\] is given by

If for the differential equation \[y'=\frac{y}{x}+\phi \left( \frac{x}

1.	If for the differential equation \[y'=\frac{y}{x}+\phi \left( \frac{x}{y} \right),\] the general solution is \[y=\frac{x}{\log \left\| Cx \right\|},\] then \[\phi (x/y)\] is given by
A.	\[-{{x}^{2}}/{{y}^{2}}\]
B.	\[-{{y}^{2}}/{{x}^{2}}\]
C.	\[{{x}^{2}}/{{y}^{2}}\]
D.	\[-{{y}^{2}}/{{x}^{2}}\]
Answer» E.

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If for the differential equation \[y'=\frac{y}{x}+\phi \left( \frac{x}{y} \right),\] the general solution is \[y=\frac{x}{\log \left| Cx \right|},\] then \[\phi (x/y)\] is given by

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