# Linked Questions

20 questions linked to/from Implement finite Fourier transforms
44 votes
4 answers
2k views

### Is there a convenient way to copy/paste text-interspersed SE code snippets into Mathematica?

Is there a way to copy and paste code snippets from SE to Mathematica if these snippets are interspersed with text? Like e.g. in Morphing Graphics, color and location in both the question and answer, ...
• 15.5k
21 votes
4 answers
1k views

### What's wrong with this FFT-based Von Kármán vortex street simulation?

About 9 years ago, I came across this interesting website, and found the following paragraph with a broken Mathematica code sample: When fluid passes an object, it can leave a trail of vortices ...
• 67.5k
14 votes
2 answers
1k views

### A more convenient Fourier series

Personally, I feel the design of FourierSeries/FourierSinSeries/FourierCosSeries/...
• 67.5k
7 votes
4 answers
609 views

• 297
2 votes
2 answers
1k views

### Comparing analytical solution with numerical solution of Helmholtz equation in a unit square

I am just learning PDE, and I am interested to compare analytical solution with numerical solution of Helmholtz equation in a unit square with zero boundary condition. I am not sure if it possible. ...
• 91
2 votes
2 answers
311 views

Starting problem: $$\begin{cases} \nabla^2 f = 0 & \text{on} \; \Omega \\ \frac{\partial}{\partial\mathbf{n}} f = y\,n_x - x\,n_y & \text{on} \; \partial\Omega \end{cases}$$ with $\Omega \... • 4,452 5 votes 1 answer 389 views ### how to obtain solution for$u_t+u=u_{xx}$I was trying to verify my hand solution for this PDE using Mathematica. Is a trick to help Mathematica obtain solution to$u_{t}+u=u_{xx}$with initial conditions$u(x,0)=f(x)\$ and boundary ...
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