Is it one 2D example of FEM&
![18-10-pdesolve-error[1].png](https://sejnu66972.i.lithium.com/t5/image/serverpage/image-id/4980i0D828570E23F22F7/image-size/large?v=1.0&px=999 "18-10-pdesolve-error[1].png")
![18-11-Pde-Plate-Progr[1].png](https://sejnu66972.i.lithium.com/t5/image/serverpage/image-id/4981i4E16150453BFE1D6/image-size/large?v=1.0&px=999 "18-11-Pde-Plate-Progr[1].png")
![18-12-Counter-Plot[1].png](https://sejnu66972.i.lithium.com/t5/image/serverpage/image-id/4982i4ACC3F4904E742A8/image-size/large?v=1.0&px=999 "18-12-Counter-Plot[1].png")
I Iramoslima,
the argument, as you know, is vast and complicated. I give you an outline about the difference method theory which is almost similar to the one on finite elemets method, to get an idea of what it is. I add some examples, of which some are downloaded from the community. I forgot to tell you that some results must be verified since they are not copied by some text.
1)
Greetings
FM
It would be more correct to write so:
