8.27.1 Top new questions this week

8.27.1.1 How to make a function with two patterns listable?
8.27.1.2 Is there a method faster than FindFit to fit conical elliptical cylinder to point data?
8.27.1.3 Speeding up computation of Gaussian integral
8.27.1.4 Creating Picture-in-Picture functionality by Attaching a Notebook to a Notebook using AttachCell[]
8.27.1.5 Detect an event in NDSolve that is initially true
8.27.1.6 How to remove branches in Piecewise with measure 0
8.27.1.7 Why does mathematica repeat my differential equation again?Does it mean no solution?
8.27.1.1 How to make a function with two patterns listable?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272291

Suppose that I have a function that has two patterns: 
 disksConstantRadius[radius_][points_] := Disk[#, radius] & /@ points 
 
(noting that this would be better---... 
[operators] [attributes]
 
asked by Craig Carter https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12461 Score of 11
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 7
8.27.1.2 Is there a method faster than FindFit to fit conical elliptical cylinder to point data?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272292

I have a code that fits conical elliptic cylinders to point data. It utilizes  FindFit . 
Usually, I need to fit over 1,500 "cylinders"**, each are ... 
[performance-tuning] [mathematical-optimization] [fitting]
 
asked by Anton https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81381 Score of 10
answered by Henrik Schumacher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38178 Score of 13
8.27.1.3 Speeding up computation of Gaussian integral

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272484

Suppose $x$ comes from standard normal in $d$ dimensions. Are there  NIntegrate  tricks I can use to speed up the following Gaussian integral? 
$$f(a)=E_x\left[\frac{... 
[numerical-integration]
 
asked by Yaroslav Bulatov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=217 Score of 8
answered by JimB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19758 Score of 11
8.27.1.4 Creating Picture-in-Picture functionality by Attaching a Notebook to a Notebook using AttachCell[]

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272375

I use Mathematica for math lectures at my school.  I would like to find a way to attach a secondary notebook to a primary notebook using AttachCell[]. The idea is to have picture-in-picture (PIP) ... 
[front-end] [notebooks] [cells] [slideshows] [document-creation]
 
asked by B flat https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=33996 Score of 7
answered by Alexey Popkov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=280 Score of 4
8.27.1.5 Detect an event in NDSolve that is initially true

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272295

I want to check at what time the derivative of a function converges to zero. If the function starts far from equilibrium, the event is detected correctly at ... 
[differential-equations] [event-detection]
 
asked by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 Score of 7
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 7
8.27.1.6 How to remove branches in Piecewise with measure 0

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272512

I am doing  Convolve  over  UnitTriangle  in 2 dimensions and the resulting piecewise function has conditions with measure zero (... 
[simplifying-expressions] [expression-manipulation] [piecewise]
 
asked by carlosayam https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1215 Score of 6
answered by Adam https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74641 Score of 4
8.27.1.7 Why does mathematica repeat my differential equation again?Does it mean no solution?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=272445

I am trying to solve this 
\begin{equation} 
(1-\frac{2}{r})\partial_r^2 u+\frac{2}{r}(1-\frac{1}{r})\partial_r u+\frac{1}{r^2} \partial^2_x u+\frac{\cot x}{r^2} \partial_x u-\frac{\cos x}{r^2}(1+\frac{... 
[differential-equations] [equation-solving] [symbolic]
 
asked by Sven2009 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=83039 Score of 6
answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 12