https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236895
These 399 PDE’s no longer produce result under Version 12.2 on windows. DSolve now returns unevaluated. These all evaluated under version 12.1. Why is that? And ...
asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 17 votes
answered by Devendra Kapadia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18617 12 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236843
Since we have soon historical conjunction of Jupiter and Saturn I have prepared code with visualization planet Jupiter and Saturn with moons. This code first been prepared for version 11.3 and with ...
asked by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 16 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237032
I am unable to obtain the numerical value of the derivative of the hypergeometric function.
Please note that the (2,4,0,0) is the derivative with respect to the first and second
argument
asked by Sachin Kaushik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58727 7 votes
answered by Mariusz Iwaniuk https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26828 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236980
I’m trying to solve the Schrödinger equation for the hydrogen atom without made the variable separation of the polar and radial coordinate. It is my test code to extrapolate to another system with its ...
asked by Jorge Castaño https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73029 7 votes
answered by Jorge Castaño https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73029 0 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236934
Sum[((-1)^(i + 1)*Binomial[n, i]*(n - i)!)/n!, {i, 1, n}]
This cause a Recursion problem.
As the comment said, If simplify the formula and then sum it, problem ...
asked by wuyudi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68689 6 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236971
I have a function \(f(n)\) over \(n\in \mathbb {N}\). I want to know its maximum value over a very large domain, say \(n=1,2,3,4,...,10^6\). Is there a way to ask Mathematica to give me the maximum value of ...
asked by charmin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74550 6 votes
answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 9 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237045
The surface is determined by this parametric equation
ParametricPlot3D[{Cos[],Sin[],z(2+ Cos[])},{,-Pi,Pi},{z,0,1}]
How to unfold the surface in Mathematica? ...
asked by expression https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7339 5 votes
answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 3 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=67521
I’m solving equations with many Cosines and Sines. And I want to convert all the Sines to
Cosines using trigonometric formulas such as cos(x)=sin(x+pi/2). How can I do
this?
asked by YongCheol Kwon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=23041 3 votes
answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=59132
I tried to ask Mathematica to imitate Andy Warhol, let it convert a Marilyn Monroe’s portrait so that it looks like Warhol’s world famous pop-art painting. However, the result shown below is far from ...
asked by Putterboy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16069 51 votes
answered by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 66 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19859
I need to save data that Mathematica uses inside the Plot command. The format that I would like to have is:
x1 y1 x2 y2 .....
asked by molkee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5097 30 votes
answered by Mr.Wizard https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=121 46 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=135937
Salacious title, but true story.
asked by Prisoners Dilema https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46025 42 votes
answered by bobthechemist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7167 23 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=16881
Well, the title is self-explanatory. What sorts of snowfall can we generate using Mathematica? There are two options I suggest to consider:
1) Continuous GIF animations with smallest possible number ...
asked by faleichik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=219 40 votes answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 54 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=46538
I want to get the following expression from Mathematica to LaTeX:
\[ \begin {bmatrix} E_{\parallel } \\ E_{\perp } \end {bmatrix} \]
I have tried to use inbuilt 'symbol' character from the special ...
asked by Steve Hatcher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13314 19 votes
answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 27 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=627
I would like to plot those two datasets on top of each other. But they have very different range on the \(y\) axis. How can I have two different axis?
I found the following on the help menu but quite ...
asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 148 votes
answered by ArgentoSapiens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=92 151 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236779
How can I do simple tests like determining if an integer is a power of 2? Mathematically, the result below should be True, and I understand why it doesn’t work on MMa, but how do I do this test ...
asked by Jerry Guern https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=20042 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237042
I came upon an interesting problem. Suppose you have three vectors \(\psi =(a, b)\), \(\phi =(c,d)\) such that their components do not commute: \(ac\neq ca\), \(bd \neq db\) etc. (in general the vectors may ...
asked by geom https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68502 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=236932
I’m trying to write a Module that produces some arrows with custom Arrowhead shapes. However, I want the code external to the
asked by Wynne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36616 1 vote