User Portlet
| Discussions |
|---|
| Thank you really so much. |
| Hi , I want to solve an Laplace Equation by 3 Neumann Boundary (bottom , left , right) and a Dirichlet Boundary (top), i write a code but i dont know how to complete it by repalce Boundaries , please help me. Best regards Saleh ... |
| Do you think this works for you sol = Flatten@ DSolve[{u''''[x] + u''[x] + u[x] == 0, u[0] == 1, u'[0] == 2, u[1] == 3, u'''[1] == 5}, u[x], x]; Plot[u[x] /. sol, {x, 1, 10}] d = Table[u[x] /. sol, {x, 1, 10}] // N ... |
| This may be a start: DynamicModule[{fdm, n, m, \[Alpha], \[Beta], h, a, b, A, B}, fdm[n_] := (m = n - 1; \[Alpha] = -4 + h^2; \[Beta] = 6 - 2 h^2 + h^4; h = 1/n; Do[Do[a[i, j] = 0, {i, 1, m}], {j, 1, m}]; ... |
| Dear Neil , First of all , i must thank you for your attention & also your help in solving problem , Thank you I should describe you that which formulas i used in solving problem were come from using DTM (Differential Transform Method) on... |