11.3.1 Top new questions this week

11.3.1.1 How many isosceles triangles?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310104

What algorithm can we use here to see how many isosceles triangles there are with the points being the vertices of the triangles.  (Note that triangles can be in any direction, including diagonal, and ... 
[list-manipulation] [graphics] [geometry] [combinatorics]
 

asked by Steve237 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69429 Score of 9

answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81335 Score of 6

11.3.1.2 How to eliminate variables in ODE system?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310082

I have a system of ODEs. 
$$ \begin{gathered} 
\frac{u_2-u_3}{R}=\frac{u_1}{R}+C \frac{\mathrm{~d} u_1}{\mathrm{~d} t} \\ 
C \frac{\mathrm{~d}}{\mathrm{~d} t}\left(u_3-u_1\right)=\frac{u_1}{R}+C \frac{\... 
[differential-equations]
 

asked by lotus2019 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69835 Score of 8

answered by ubpdqn https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1997 Score of 7

11.3.1.3 wrong answer for function minimum

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310122

Does anybody know why this comes out wrong ? 
[mathematical-optimization] [bugs]
 

asked by Werner Riegler https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=98133 Score of 8

answered by Roland F https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=92018 Score of 2

11.3.1.4 Looking for direct neighbors in a trianglemesh

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310177

 netz = DiscretizeRegion[Triangle[], MaxCellMeasure -> 1/25] 
HighlightMesh[netz , Labeled[0, "Index"]] 
 
 
My question: 
Is there an easy way to get the ... 
[finite-element-method] [mesh]
 

asked by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 Score of 7

answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81335 Score of 12

11.3.1.5 How to fill the unit square with rectangles efficiently?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310202

I want to fill the unit square with random, overlapping rectangles. I tried the following: 
... 
[regions] [area]
 

asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 Score of 6

answered by ydd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72953 Score of 8

11.3.1.6 Why `LegendItem` does not work in version 14

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310221

The code below was working in previous versions of Mathematica but is not functioning in version 14. My goal is to create a plot with an error band and include a legend that matches the plot style. ... 
[plotting] [legending] [style]
 

asked by Hubble07 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7009 Score of 6

answered by Ren Witcher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61384 Score of 4

11.3.1.7 How to get the values of Manipulate control variables programmatically into a variable

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=310225

Assume you have created the code for control Manipulate variables and the name thereof somewhere: 
 iter = {{a1, 1, 2}, {a2, 1, 2}}; 
var = {a1, a2}; 
 
Now you want to ... 
[manipulate] [localization]
 

asked by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 Score of 5

answered by andre314 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5467 Score of 2