8.5.1 Top new questions this week

8.5.1.1 why these integrals fail to evaluate in V 13 compared to V 12.3?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263247

This was also reported to WRI. [CASE:4903465] 
I'd like to know why these integrals no longer evaluate in V 13 and timeout after 3 minutes while using the same PC and OS they all evaluate quickly in ... 
[calculus-and-analysis] [version-13]
 

asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 12

answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 6

8.5.1.2 Out of memory when computing a coefficient of a large symmetric polynomial

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263153

... 
[polynomials] [memory] [coefficients]
 

asked by PalmTopTigerMO https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=54544 Score of 10

answered by Akku14 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34287 Score of 19

8.5.1.3 Why does NMinimize using NelderMead without PostProcessing always stop at the nearest decade of iterations, e.g. 100, 110, 120

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263316

Why does NMinimize using NelderMead without PostProcessing always stop at the nearest decade of iterations, e.g. 100, 110, 120... Perhaps Catch Throw can prevent this e.g., see this answer, but that ... 
[mathematical-optimization] [code-request] [implementation-details]
 

asked by Carl https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42558 Score of 6

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 8

8.5.1.4 Maintaining shape size while rotating in GraphicsGrid

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263139

I've the following snippet, simplified from a more complex code: 
... 
[graphics] [rotation] [size]
 

asked by Jepessen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2410 Score of 5

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 Score of 6

8.5.1.5 Change thickness / transparency / style of contour lines by value

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263278

I have the following overlapped contour plot 
... 
[plotting]
 

asked by Hyperplane https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84988 Score of 5

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 5

8.5.1.6 Factoring a quadratic form associated with a $4 \times 4$ matrix into a sum of four squares

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263104

The matrix W =  $\left( 
\begin{array}{cccc} 
5 & 7 & 6 & 5 \\ 
7 & 10 & 8 & 7 \\ 
6 & 8 & 10 & 9 \\ 
5 & 7 & 9 & 10 \\ 
\end{array} 
\right)$ 
has a ... 
[matrix] [simplifying-expressions] [algebraic-manipulation] [factorization]
 

asked by 1729taxi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84472 Score of 5

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 1

8.5.1.7 How to merge join two matrixes?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=263143

First, I have a 3x3x2 matrix A, which looks like: 
 
then i have a 3x3x1 matrix B, which is: 
 
How to merge the B into A and make a 3x3x3 matrix by appending each of the element of B into corresponding ... 
[list-manipulation] [matrix] [manipulate] [data]
 

asked by stary https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=82406 Score of 5

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 Score of 15