PDA

View Full Version : Differential equation


captain.joco
Oct8-07, 07:17 AM
1. The problem statement, all variables and given/known data

xdx + ydy + x(xdy - ydx ) = 0


2. Relevant equations



3. The attempt at a solution

I guessed that some manipulation needs to be done so total derivative method can be applied, or get to state ( x^2 + y^2 ), but further then that, I am lost