1take it n then differentiate wid respect to x........n they put dy/dx=p...and then solve the equation u get n then the p eliminant from the initial eqn n obtained eqn is the solution!!
x\frac{dy}{dx}+\left({\frac{dy}{dx}}\right)^2= y
A good one.. (I couldnt solve for the first few minutes before i was tempted to see the solution :D.. But now i wish i had not seen the solution and tried it myself :P
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