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Aug18-10, 02:40 PM
P: 3,014
2nd order nonlinear differential equation

I think you have forgotten the coefficient [itex]a[/itex] in front of the first term on the right hand side. Other than that, the equation is correct.

Do some algebra to simplify the equation so that the coefficient in fron of [itex]p'(u)[/itex] is equal to 1. Post your simplified equation!