# Tagged Questions

154 views

### Heat Transfer equation by numerical methods

I want to solve the following heat conduction equation using numerical methods: D[u[x, t], t] -alpha*D[u[x, t], {x, 2}] == 0 u[x, 0] == 1/(1 + x^2)^0.25, u[-10, t] == u[10, t] == 0, ...
17 views

### NDSolve_ODESolve_Plotsolution [duplicate]

I am trying to use mathematica to solve this problem. Thank you! Given the ODE $$-\frac{a^2 V_0}{2} f''(x)-V_0\cos\big(\frac{2\pi x}{a}\big) f(x)=E f(x)$$ (a,V_0) are positive real constants. Find ...
191 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: ...
408 views

### Running a Numerical Simulation on a System of Differential Equations with unique initial conditions

I have a system of differential equations as follows: ...
805 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 ...
220 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 ...
708 views

### optimization problem with NDSolve

I want to minimize the function fcc. When fcc is calculated for a specified point the answer is correct: ...