10.26.1 Top new questions this week

10.26.1.1 Why this call to DSolve gives this error in V 14.1?
10.26.1.2 What changed in TeXForm in V 14.1?
10.26.1.3 Boundary condition for heat equation in polar coordinates deduced with L'Hôpital's rule fails for method of lines, but works well for FDM
10.26.1.4 Mathematica ignores my custom MenuSetup.tr (Windows 10)
10.26.1.5 How to get InverseMatrix for large size Matrix in Mathematica?
10.26.1.6 Compiler with CompilationTarget -> C appears broken in 14.1
10.26.1.7 How can I count frequency of a list faster?
10.26.1.1 Why this call to DSolve gives this error in V 14.1?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305808

Also reported to Wolfram support just in case.  [CASE:5167904]. 
 
Is there a way to correct this error from the new version of Mathematica 14.1? I do not know what changed and what is wrong: 
... 
[differential-equations] [version-14.1]
 
asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 11
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 9
10.26.1.2 What changed in TeXForm in V 14.1?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305826

In Version 14.1 on windows 10 I get this error calling TeXForm on solution obtained from  DSolve . No error in V 14.  This is known error. see how-to-catch-this-error-... 
[latex] [version-14.1]
 
asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 8
answered by Domen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75628 Score of 8
10.26.1.3 Boundary condition for heat equation in polar coordinates deduced with L'Hôpital's rule fails for method of lines, but works well for FDM

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305852

I've hesitated for a while about whether this should be posted to scicomp.SE or not, but still decide to discuss it here because I believe this will make the discussion more convenient. 
All the code ... 
[differential-equations] [finite-element-method] [implementation-details] [singularity] [finite-difference-method]
 
asked by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 7
10.26.1.4 Mathematica ignores my custom MenuSetup.tr (Windows 10)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305953

I'm at a loss on understanding how to get Mathematica use a customized MenuSetup.tr. 
Actually I can't even find where is the default MenuSetup.tr used by the default Mathematica configuration when a ... 
[front-end] [customization] [menu] [version-14.1]
 
asked by Luca M https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=11301 Score of 6
answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 Score of 6
10.26.1.5 How to get InverseMatrix for large size Matrix in Mathematica?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305975

I'm trying to solve the 7th problem of Hundred-dollar, Hundred-digit Challenge problems 
 
Let A be the 20000Œ20000 matrix whose entries are zero everywhere except for the primes 2, 3, 5, 7, ..., 224737 ... 
[matrix] [numerics] [numerical-value] [inverse] [numeric-array]
 
asked by 138 Aspen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79318 Score of 5
answered by Henrik Schumacher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38178 Score of 7
10.26.1.6 Compiler with CompilationTarget -> C appears broken in 14.1

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305865

On the same Windows 11 machine with the same C compiler (Visual Studio 2022): 
... 
[compile] [version-14.1]
 
asked by ulvi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1714 Score of 5
10.26.1.7 How can I count frequency of a list faster?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=305769

I have a list 
 list = RandomInteger[{120, 180}, {20}] 
 
I want to count from the list elements $a$ satisfying conditions: $120\leqslant a <130$, $130\leqslant a &... 
[list-manipulation] [counting]
 
asked by minhthien_2016 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5320 Score of 5
answered by E. Chan-López https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53427 Score of 4