Tagged Questions
0
votes
2answers
65 views
characteristic polynomial based on differential equation
I have this differential equation:
$$\ddot{x}-\frac{1}{6} \dot{x} - \frac{1}{6}x = e^t$$
When I DSolve it looks like this:
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1
vote
2answers
293 views
Running a Numerical Simulation on a System of Differential Equations with unique initial conditions
I have a system of differential equations as follows:
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0
votes
0answers
120 views
Diffusion equation with concentration dependent diffusivity, NDSolve has problem at C0> 10^20
I am using NDSolve to solve the diffusion equation:
D[Cp[x, t], t] == D[Dc D[Cp[x, t], x], x]
where Dc is a function of ...
8
votes
1answer
483 views
Poisson solver using Mathematica
I am looking for some help with a Poisson solver I am writing in Mathematica. The code is quite long with Arrays plugged in, so the full details can be found at http://pastebin.com/uSrSDcW6
I am ...
1
vote
1answer
155 views
Problem with Eventlocator Method for NDSolve
I want to solve the ode and plot the solution v[x] for different values of parameter a where ...
3
votes
2answers
484 views
optimization problem with NDSolve
I want to minimize the function fcc. When fcc is calculated for a specified point the answer is correct:
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3
votes
1answer
297 views
Optimizing a function involving NDSolve results in error messages
I want to minimize a function f with NMinimize but an error occurs that says:
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6
votes
2answers
341 views
Very long Refine/Solve batch run - is my code broken, or just complicated?
So I'm trying to run some Mathematica code in batch mode from my university cluster. Specifically, I'm trying to find the equilibria of a system of ordinary differential equations. Inspired by the ...
