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| I have run a command of Plot for a solution of an equation. However, the graph is always empty. I don't know what's wrong with my code. Could anyone help me to figure it out? My code is following: ![enter image description here][1] [1]:... |
| I got an error when I want to find the numerical solution for this PDE. It says "Boundary condition is not specified on a single edge of the boundary of the computational domain." the code is following: eqn = D[u[x, t], t] == D[D[u[x, t], x],... |
| Thank you very much. It works. Also, I got another error when I want to find the numerical solution for this PDE. It says "Boundary condition is not specified on a single edge of the boundary of the computational domain." the code is following: ... |
| I have run into trouble with a Plot3D problem. My code is following: eqn = D[u[x, t], t] == D[D[u[x, t], x], x]; ic = {u[x, 0] == 1, u[0, t] == 0, Derivative[1, 0][u][10, t] == 0}; dsol = DSolve[{eqn, ic}, u, {x, t}]; ... |