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| Hello, Can you please help with the following? I am looking for solutions of a static diffusion equation in 2D plane outside of a disk of some radius D[u[x, y], x, x] + D[u[x, y], y, y]=0, under the following Neumann boundary... |
| Hello, I'm trying to solve a PDE system near r=0, which is a singularity (please see attached file) I chose to solve in the interval `{r, \[Epsilon], R}`, where `\[Epsilon]` is a positive cutoff. The solution is very sensitive to changes in... |
| Thank you. Yes. Had a mistake when rewrote the identity from the book into the message. Of course it doesn't matter to the question I asked regarding how to define recursive operators and the answer you provided. Regarding identities in the... |
| Thank you very much for the answer. |
| Thank you very much. |
| Hello and thank you very much for your answer. The closed form general solution for the equation has the following form (I also verify that in fact it satisfies the differential equation). [mcode]H[t_] := ( Sqrt[c] (\[Alpha] Exp[ ... |
| Hello, In the description below you can find an error, which occurs for a Rational function of exponent argument. Do I miss anything? Followed the instruction and attached the problem description below. Hope it is readable now. Still, in my... |