Total flux of the gradient of the numerical solution of a PDE through a surface
What should I make of "Simplify: Time spent on a transformation exceeded -4.03955*10^12 seconds"?
Barchart with statistics as labels
Challenge: Computing the Fourier Series of a List Plot!
How to solve this PDE for steady state?
How to write that Lyapunov function?
How to rotate a circle around the y-axis and calculate the volume of the 3D solid?
Total flux of the gradient of the numerical solution of a PDE through a surface
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246808
Trying to solve the following PDE with BC T==1 on a spherical cap of a unit sphere and T==0 at infinity (approximated as ... [differential-equations] [calculus-and-analysis] [numerical-integration] [finite-element-method] [heat-transfer-equation]
asked by umby https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58367 11 votes answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809
12 votes What should I make of "Simplify: Time spent on a transformation exceeded -4.03955*10^12 seconds"?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=247043
Running version "12.0.0 for Microsoft Windows (64-bit) (April 6, 2019)", in case that matters. I fed Mathematica the command ... [warning-messages]
asked by A. Howells https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80314 8
votes answered by JimB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19758
4 votes Barchart with statistics as labels https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246820
The following code (thanks to @Jagra): ... [charts] [code-review] [code-request]
asked by Tugrul Temel https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=60365
7 votes answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125
8 votes Challenge: Computing the Fourier Series of a List Plot! https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=247081
I have a bunch of data points (copied from Mathematica below), which I have 'ListPlotted' I would now like to compute the Fourier series of this function (after doing a Fourier transform I assume? Or ... [plotting] [calculus-and-analysis] [numerical-integration] [fourier-analysis]
asked by rdx https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80329 6 votes answered by Daniel Lichtblau https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=51
3 votes How to solve this PDE for steady state? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=247031
... [differential-equations] [numerical-integration] [finite-element-method]
asked by psimeson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29312 6 votes
answered by Chris K https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6358
8 votes How to write that Lyapunov function? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=247073
For didactic purpose I investigate the stability of the ODEs system {x'[t] == x[t] + y[t], y'[t] == -5 x[t] - 2 y[t]} . Its stream plot ... [differential-equations]
asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 6 votes
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999
4 votes How to rotate a circle around the y-axis and calculate the volume of the 3D solid?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246948
How do I rotate the equation ${(x-5)^2}+{y^2}={3^2}$ around the y-axis and calculate the volume of the plotted 3D solid? I tried the code below but the result doesn't work. ... [calculus-and-analysis] [scripting]
asked by AndreaNeg https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80293 6
votes answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111
5 votes