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Feb
26
awarded  Nice Answer
Jan
17
awarded  Yearling
Jan
17
awarded  Good Answer
Jan
17
awarded  Yearling
Oct
20
awarded  Popular Question
Mar
18
answered NIntegrate(with singularities) gives different results, which one should I trust?
Feb
12
awarded  Informed
Jan
28
answered NIntegrate::slwcon Problem
Jan
28
comment NIntegrate::slwcon Problem
Unfortunately, this is actually an example of LocalAdaptive failing: It incorrectly believes it has converged to a precision of 11. But the correct answer is zero, so any finite answer (such as -1.77636*10^-14) is incorrect to any precision.
Jan
17
awarded  Yearling
Jan
7
awarded  Good Answer
Oct
25
comment How to collect result continuously (interruptible calculation) when running parallel calculations?
@xzczd The Reap & ParallelSow are used to preserve partially computed results if the computation is aborted before finishing.
Aug
25
comment why maxrecursion didn't work if I specify singularity in NIntegrate
Isn't the exact value of the integral 1? With MaxRecursion -> 5, and splitting the integration region first at x == 2, NIntegrate converges to 1. Thus 5 recursions are sufficient. And any MaxRecursion -> n for n > 5 should be expected to be identical.
Aug
25
comment why maxrecursion didn't work if I specify singularity in NIntegrate
What are you expecting to happen? What you are seeing is that 5 recursions (within each of the sub-intervals {-Infinity, 2} and {2, Infinity}) are sufficient to solve the integral to within PrecisionGoal -> Automatic.
Aug
6
awarded  Nice Answer
Aug
5
revised Elegant way of obtaining the envelope of oscillating function
A little explanation about how it works
Jul
26
answered NIntegrate extremely piecewised functions
Jul
9
revised Speed of convergence for NIntegrate
Clarify slwcon criterion
Jul
9
answered Speed of convergence for NIntegrate
Jul
9
comment Speed of convergence for NIntegrate
WorkingPrecision -> 10 amounts to a decrease of working precision from ~16 (the value of $MachinePrecision). It also decreases the value of PrecisionGoal -> Automatic, to ~4 I think (from a default of ~6).