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jackmell
#8
Oct25-11, 06:29 AM
P: 1,666
I don't know how Mathematica determines default boundary conditions. However, seems to me if you don't have all the boundary conditions, then the system is ill-posed meaning the solution is not unique. But I'm practical: if you can get it to work to get an answer that you feel is correct then that's good enough for me. :)