A) \[y\frac{dy}{dx}-x{{\left( \frac{dy}{dx} \right)}^{2}}=1\]
B) \[\frac{x{{d}^{2}}y}{d{{x}^{2}}}+{{\left( \frac{dy}{dx} \right)}^{2}}=0\]
C) \[y\frac{dx}{dy}+x=1\]
D) None of these
Correct Answer: A
Solution :
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