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Results tagged with numerical-integration
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user 63584
Questions on the use of numerical functions NIntegrate and NDSolve.
3
votes
Accepted
1D Integral always evaluates to 0 and Replace All
You're right that it's a delayed evaluation problem! I traced the problem back to Eigenvectors. Note that it behaves differently when given symbolic arguments and numeric ones:
Eigenvectors[hMf[0.01, …
- 9,080
2
votes
Accepted
What's wrong with SetDelayed? The body of the function works alone, while setdelayed to it a...
This is actually nontrivial: it has to do with how Mathematica manages scope after substituting in values that match a pattern (as in applying :=).
By inspecting poincare[sol, 1] // TracePrint, we see …
- 9,080
3
votes
Compute area enclosed in a curve on a surface
As long as I've transcribed h correctly, I think this might be a case of just tidying up your integrand before putting it into NIntegrate. All I do is use Simplify.
A = 0.1;
Clear[x,y];
h[x_, y_] :=
…
- 9,080