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1d
comment NDSolve with shooting method
why are you not using the shooting method for the problematic solution?
1d
comment NIntegrate fails to converge around a value out of integration range
Since you know the function is well behaved in the region of interest you can always just manually sample and use trapezoidal rule, foregoing NIntegrates adaptive sampling and convergence checks of course. related mathematica.stackexchange.com/a/48360/2079
1d
revised Do loop not working as expected
added 2 characters in body
1d
answered Do loop not working as expected
1d
comment Do loop not working as expected
a bit cleaner if you partition by 3: Partition[lst, 3][[2 ;; ;; 2]] // Flatten or Partition[lst, 3, 3, {1, 1}, {}][[2 ;; ;; 2]] // Flatten
1d
comment Why is ListPlot so slow here?
For reference creating essentially the exact same plot with Graphics/Point takes 0.0005 seconds (both versions..).
1d
comment Why is ListPlot so slow here?
I get ~0.5 seconds with v9/windows and ~6 seconds 10.1/linux
1d
comment Frequency of punctuation characters used in Mathematica languages
I see, this is importing the entire low level notebook. Properly you need to just include the text of input cells..
1d
comment Frequency of punctuation characters used in Mathematica languages
is that representative code? Odd for & , # to be low and ? so high..
1d
revised How to plot several functions without jumping? (multiple eigenvalues of a system as functions of 2 parameters)
added 105 characters in body
1d
comment Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter
if it doesn't need to be fully automatic, you might be best off to do some manual selection if that situation arises.
2d
revised Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter
deleted 36 characters in body
2d
revised Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter
added 2 characters in body
2d
answered Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter
2d
answered Showing all Digits
2d
comment Integral equation
i was just about to ask how the solution can not depend on d
2d
comment Showing all Digits
Table[N[1 + 10^(-n), n + 1], {n, 1, 30}] ( a bit specialized to the specific example, but that's what you asked.. )
May
27
comment Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter
sorry to not be much help, but I'm not surprised the linked solution doesn't scale well to such a large system.
May
27
revised Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter
added 292 characters in body
May
27
comment NSolve running for ever
any particular reason you choose the first two of four solutions returned by NSolve?