New answers tagged differential-equations
1
If you want to know the why and the how, you probably want to watch lecture 21.65 here:
https://www.math.colostate.edu/~bangerth/videos.html
Which you probably want to do after you've watched lecture 21.6.
Disclaimer: I'm the one in these videos.
1
The way I computed the solution in the linked answer is the classical one: I just took a reference solution (assuming the code was correct, i.e. the numerical solution I found is the right one) with a small enough step size $h$, say $h=10^{-9}$. Then I computed the solution with smaller $h$s and for each one of those $h$ I computed the $|| e_h ||$ in a ...
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