7.33.1 Top new questions this week

7.33.1.1 Is the Risch algorithm implemented in Mathematica?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256201

The command of Mathematica 12.3.1 
 Integrate[(4 x - 1)/Sqrt[x^4 - 2*x^3 + 3*x^2 + 2*x + 1],x]//ToRadicals 
 
 
... 
[calculus-and-analysis]
 

asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 14 votes

answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 21 votes

7.33.1.2 Routh-Hurwitz criterion not giving correct answer when done manually?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256213

Consider the system: 
\begin{align} 
\frac{dS}{dt} &= \nu N -\frac{\beta S I}{N} + \xi R - \nu S\\ 
\frac{dE}{dt} &= \frac{\beta S I}{N}- \sigma E -\nu E  \\[2ex] 
... 
[differential-equations] [equation-solving] [nonlinear] [eigenvalues] [stability]
 

asked by Math https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77577 13 votes

answered by Chris K https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6358 11 votes

7.33.1.3 Text shake in an animation

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256254

I'm making a simple animation, found that the text is always slight shake. I think this is not a precision problem. Maybe related to rendering? Is there a related option or this workaround? 
 
... 
[graphics] [animation]
 

asked by matrix89 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5379 10 votes

answered by Jason B. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9490 6 votes

7.33.1.4 Need four random values in a range which total unity

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256138

I need to generate four positive random values in the range [.1, .6] with (at most) two significant digits to the right of the decimal, and which sum to exactly 1. Here are three attempts that do not ... 
[random] [conditional]
 

asked by Rogo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66162 7 votes

answered by creidhne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41569 2 votes

7.33.1.5 Spectrahedron mesh lines

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256239

The following is a spectrahedron region plot using 3 eigenvalues for mesh functions. It takes 22 seconds and mesh line quality is quite poor, any tips on making it nicer? 
Already using PlotPoints->... 
[plotting] [visualization]
 

asked by Yaroslav Bulatov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=217 7 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 10 votes

7.33.1.6 How to draw two circles on sphere?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256189

I am trying to draw two circle  SAB  and  ABC  on this sphere (no need dashed line) 
 
I tried 
... 
[graphics3d]
 

asked by minhthien_2016 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5320 7 votes

answered by Domen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75628 7 votes

7.33.1.7 How can I generate the same random number in Mathematica and MATLAB?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=256125

As a part of my research studies, I have developed a code which is essentially based on random generation of numbers. The first version of the code was written in MATLAB, however, for some reasons I ... 
[random] [matlab] [random-process]
 

asked by KratosMath https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53039 7 votes

answered by mikado https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36788 16 votes