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| Thanks! Still I have this warning: "NDSolve::ndnum: Encountered non-numerical value for a derivative at \[Xi] == -1.." . Do you know if there is something wrong with some definitions I made, or something that tells to the NDSolve command to evaluate... |
| Hi, thanks for the answer and thank you for the advices. Unfortunately the script is a little bit different, and the command NDSolve still does not give an answer. I add the correct differential equation (you missed some terms in theta) &[Wolfram... |