meta user
network profile
| bio | website | |
|---|---|---|
| location | China | |
| age | ||
| visits | member for | 9 months |
| seen | 49 mins ago | |
| stats | profile views | 135 |
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Apr 8 |
comment |
NDSolve: Normalizing at every step Er… You mean you need to normalize y at the moment NDSolve gets the solution for the first time point and then solve the y at the next time point with this solution and so on? …Is it still a PDE-solving issue? |
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Apr 7 |
revised |
Help solving a system deleted 35 characters in body |
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Apr 7 |
answered | Help solving a system |
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Apr 7 |
comment |
Help solving a systemClear[r] first and then run your code. |
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Apr 7 |
revised |
BC for transport equation using NDSolve edited body |
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Apr 7 |
revised |
BC for transport equation using NDSolve deleted 228 characters in body |
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Apr 7 |
comment |
BC for transport equation using NDSolve @Spawn1701D Yeah, f[10, t]==0 is still approximate, but I think for numeric solution it's acceptable, since it's hard to find a better BC… For this part I've edited my answer a little. |
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Apr 7 |
revised |
BC for transport equation using NDSolve added 1185 characters in body |
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Apr 7 |
answered | BC for transport equation using NDSolve |
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Apr 7 |
awarded | Civic Duty |
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Apr 3 |
comment |
How to plot a 3D surface with a simple black and white style? In fact, Lighting -> {White} is enough. |
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Mar 28 |
comment |
Mathematica envelope for the bottom of a plot, a generic function This method is good！ but… why does the 1.4 standard deviation work? I mean… what's the theoretical basis of this method? |
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Mar 9 |
comment |
Numerically solving an inhomogeneous partial differential equation Oh, I see, it's symmetric and smooth at $r=0$, right? Now I can understand it both by considering $y$ as a steady state of something like heat distribution and considering the Cartesian form of the equation. |
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Mar 8 |
comment |
Numerically solving an inhomogeneous partial differential equation Er…why does $\frac{1}{r}y^{(1,0)}(r,z)$ become $y^{(2,0)}(r,z)$ when $r\rightarrow 0$? |
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Mar 8 |
revised |
Solving and plotting ODEs while varying one of the initial conditions added 23 characters in body |
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Mar 7 |
revised |
Solving and plotting ODEs while varying one of the initial conditions added 81 characters in body |
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Mar 7 |
revised |
Solving and plotting ODEs while varying one of the initial conditions deleted 11 characters in body |
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Mar 7 |
answered | Solving and plotting ODEs while varying one of the initial conditions |
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Mar 7 |
comment |
Solving and plotting ODEs while varying one of the initial conditions @ruebenko Wow, I think I'd better upgrade to v9 quickly. |
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Mar 7 |
comment |
Solving and plotting ODEs while varying one of the initial conditions Your equation can be solved analytically, so you can just exchange y[1]==1 with y[1]==z and DSolve the equation and Plot3D[x[t] /. sol, {t, -1, 1}, {z, -1, 1}]. |
