https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225711
When FiniteElement method is used, the differential equations will first be transformed to certain standard form (named as formal PDE in recent FEM document), and it turns out to be critical to check ...
asked by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 11 votes
answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 8 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225928
To calculate force acting on an airfoil we can use FEM with version 12 and over. Here we show an example with NACA2415. First we calculate mesh and potential flow:
ClearAll[NACA2415]; NACA2415[{m_, ...
asked by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388 9 votes
answered by user21 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18437 6 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225811
Yes I know there is no built in native function called SymbolQ (but JavaScript does). However could one be simulated to work for most cases? I often rely
on objectName[symbol] and makeRuleRow[symbol] ...
asked by Jules Manson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=37721 9 votes
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 8 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225910
sample2 = "this is a test to find whether pi works for other words or not as well pi pi pi potatpi pineapple pi-neapple";
so sample2 is a string, and I want to search the word/substring ...
asked by Aryan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73776 8 votes
answered by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 9 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225941
Is there a way to change the coloring of the boxes that are generated by Animate or Manipulate? The color of what is gray by default.
Animate[ArrayPlot[CellularAutomaton[n, {{1}, 0}, {40, All}]], {n, ...
asked by thinkingdude https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73139 8 votes
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 9 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225985
I have some data :
data={{1.01074, 0.964488}, {1.08552, 0.993067}, {1.07907, 1.01836}, {1.0477, 1.03695}, {1.07717, 1.07973}, {1.10243, 1.08195}, {1.12669, 1.09112}, {1.09405, 1.09319}, ...
asked by J.A https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58104 7 votes
answered by flinty https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72682 12 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225929
I have a list of replacements and some list they are acting on. However, some RHS of the replacements rules are identical (the LHS is not). I want to use those rules one after another (perhaps cycling ...
asked by Kvothe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45020 7 votes
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 5 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=87388
I need to change the position of my axes labels such that the y-axis label is in the middle and parallel to the y-axis. I’d also like the x-axis label to be in the middle of the x-axis rather than ...
asked by John_dydx https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7849 15 votes
answered by Virgil https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27697 16 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2456
Struggling often with Trigonometry I would like to have some code to generate this Unit Circle Trigonometry. Would be of great help when I need to transform some data :
asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 18 votes
answered by Mark McClure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36 32 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=32378
I’m visualizing some hydrogen like atomic orbitals. For looking at plane slices of the probability density, the DensityPlot function works well, and with something like:
Manipulate[ DensityPlot[ ...
asked by Peeter Joot https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10 45 votes
answered by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 24 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=194384
In version 2.0 of Mathematica there was a command, ReadProgrammerIntentions[ ] which
allowed it rapidly compose code that could solve problems simple to complex, based on my
requirements. Understand ...
asked by MikeY https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47314 52 votes
answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 38 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=207522
I just upgraded my macbook to 10.15 and could not open Mathematica 11. I am wondering are there any workarounds to use Mathematica 11 without upgrading to 12? Thank you!
asked by Jiang Xiang https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16218 27 votes
answered by Itai Seggev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4848 18 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=21544
Is there a way to find a limit of a multivariable function, like
\[\lim _{(x,y)\to (0,0)} f(x,y)\] with Mathematica?
When \(f\) is continuous, we can use \[\lim _{(x,y)\to (0,0)}\] ...
asked by Dominic Michaelis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5899 31 votes
answered by whuber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=91 42 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 18 votes
answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 26 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225913
I was wondering if it is easy to see if a given expression evaluates to a real number in a given domain? Let e.g. \(f(x,y,z)\) be some function depending on three variables \(x,y,z\). I would like to know if ...
asked by CAF https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=30885 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225980
Generally the Argmax function returns one position, where a function is maximized. Is there a easy way to obtain a list of rules for all maximizer points?
asked by Daniel Rehsmann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73792 1 vote
answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 0 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=225678
I just upgraded to v7.114 of AceFEM running on MacOS 10.15.5 and Mathematica 12.0.0.0. I was running v7.101 without a problem. AceGEN seems to work but all AceFEM code starts but does nothing. The ...
asked by Andrew https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73727 1 vote