Posted by Jeremy on Tuesday, November 13, 2012 at 8:09pm.
3x^2 + 3y^2 dy/dx = 6x dy/dx + 6y dy/dx(3y^2 - 6x) = 6y - 3x^2 dy/dx = (6y - 3x^2)/(3y^2 - 6x) = (2y - x^2)/(y^2 - 2x)