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1d
revised Complex numbers from two arrays with Real and Imaginary parts
edited tags
1d
revised Precision of NIntegrate
edited body
1d
comment Precision of NIntegrate
One possibility is to try, if applicable, various applicable methods and compare their results against the method you are developing yourself. This can be done with a "toy" version of the integral being evaluated (hopefully with a known closed form!) as well as the actual integral itself. For the truly paranoid, one can also check against NDSolve[] which often has to be more careful than NIntegrate[].
1d
comment Asymptotic forms of Bessel function
You might want to try expanding with respect to a DirectedInfinity[].
1d
comment Solve seems broken after I installed the package Tomatlab.m
What you're supposed to do the next time you report incompatibilities: 1. close and reopen Mathematica; 2. execute your Solve[] instance and note the output; 3. load the offending package; 4. re-execute the Solve[] bit and note the output; 5. note the differences, and post them here.
1d
comment Solve seems broken after I installed the package Tomatlab.m
1. What was the output of Solve[] before you loaded the package? 2. You should at least mention where you downloaded the package.
1d
comment A polyhedron convex test
BTW: you could also have done GraphicsComplex[Q8, Polygon[G8]].
2d
comment How to change the direction of increasing x in a plot
You've seen this?
2d
comment Evaluation of the second argument to NIntegrate
"…NIntegrate has a HoldAll on its second parameter…" - well, HoldAll does mean what it says; all inputs given are held.
2d
comment Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
I know, that's why I linked you to it; it seems Max's weighted average normal might help here.
2d
comment Limit of a fractional integral
You can try using Normal[] on a RootSum[] object before applying FullSimplify[].
2d
comment Limit of a fractional integral
A tip: for this particular case, use exact numbers (0, 1) instead of inexact ones (0.0, 1.0).
2d
comment Listing elements starting from 0
Hmm, but then how should we denote the object's head if we index entries from 0?
2d
comment Selecting the maximum value from the results returned by NSolve
Okay. Did you look at the examples under the docs for NSolve[]? Look for the ones using /., and the ones not using it. Note the differences. After that, look up ReplaceAll[].
2d
revised Variable ViewPoint coordinates
edited tags
2d
comment List Operations: how to combine two lists (pattern given)
Have a look at ArrayFlatten[] or MapThread[] and Transpose[].
2d
comment Selecting the maximum value from the results returned by NSolve
There ought to be an r /. in there somewhere…
2d
comment Asymptotic forms of Bessel function
Have you seen Series[]?
2d
revised Speed up adding Poisson noise to an image
added 3 characters in body
2d
comment How to show steps of “For” command
Have a look at Print[]. Maybe Sow[]/Reap[] too.