1,463 reputation
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bio website verbeia.com/mathematica/tips/…
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visits member for 2 years, 5 months
seen Jul 18 at 11:15

Jul
20
awarded  Nice Question
Jul
20
revised What Mathematica features and idioms have n^2 complexity or worse
I added a link to a page the quadratic complexity of AppendTo.
Jul
20
revised What Mathematica features and idioms have n^2 complexity or worse
I added evidence that Union[data,test] has quadratic complexity.
Jul
19
asked What Mathematica features and idioms have n^2 complexity or worse
Jul
17
revised Help in NIntegration Methods - Takes too long, why?
Editted my comment on how to use a Cartesian product of GuassKronrod points to work for a tripple integral.
Jul
14
answered Help in NIntegration Methods - Takes too long, why?
Jul
13
comment Help in NIntegration Methods - Takes too long, why?
You might be able to answer your problem if you study the page here.
Jun
8
awarded  Nice Answer
May
31
revised How do I invoke the default complexity function?
Editted to account for a hyperlink I included that doesn't work. The hyperlink is deleted.
May
31
answered How do I invoke the default complexity function?
May
24
accepted What does Internal`InheritedBlock do?
May
24
asked What does Internal`InheritedBlock do?
May
18
comment How to create internally optimized expression for computing with high WorkingPrecision?
performing arithmetic operations in the right way can reduce round off errors. One important example is use of HornerForm (a built in function) for computing polynomials. Most text books on numerical methods show a few other tricks for specific cases. It's all about avoiding catastrophic cancelation, which is the loss of precision due to subtracting numbers that are nearly equal but not close to zero.
May
18
comment How to create internally optimized expression for computing with high WorkingPrecision?
It might work better if you make jacobianMatrix a CompiledFunction. That will help if FindMinimum uses MachinePrecision to get close to the optimal solution, and switch to higher precision for fine tuning.
May
9
answered “Strange” behavior of Rule
Feb
8
awarded  Yearling
Feb
5
accepted How to make rational expressions formatted using FractionBox
Feb
4
asked How to make rational expressions formatted using FractionBox
Jan
31
comment What are the use cases for different scoping constructs?
Yet another scoping construct that I didn't see mentioned is DynamicModule.
Jan
12
comment Interactive steam tables and phase diagrams in Mathematica
For years I have wondered why Wolfram hasn't included each steam table as an InterpolatingFunction.