# User Portlet

selahittin cinar
Discussions
Hi all, I would like to solve a linear system using the Thomas algorithm, as explained in the attachment below. I tried to solve it writing each entry using its definition (3.53). But, if the matrix is larger, it takes too long. Is there any way...
Hi All, I want to find dominant eigenvalue using Power Method. I could not figure out how to find number of iteration.. Is there anyway to count number of output after run the code? This is my code to solve the problem that attached (power...
Hi All, I want to solve a 5x5 matrix using gradient iterative method. After ~34000 iteration I got result in given stopping tolerance. But can we modify/improve my iteration so that we can find solution in less iteration say 30000 steps? I have...
Hi All, I wanna solve Ax=b system using gauss iteration method. Bu I want the iteration stop when it reached stopping criteria. Instead of giving number of iteration before iteration start, iteration should stop when Norm(b-a*last...
I have the profiles for a single set of parameters stored in several different directories, like the profiles 1-25 in directory A, 26-50 in directory B, and so on. Is it possible to read them all from these directories using Mathematica (without...
Hi All, I am trying to solve PDE by using Method of lines. My code is very slow, I would like to run it at least n=100 to get good graph. That means I need to solve 100X100 matrix. Can we improve my code? Can we use                        ...
Hi, Can someone explain to me NDSolvePDE. At this link, there is an example to solve pde by using MOL.  I don'n understant what  this part ...
Hi All, I need some help to visualize my PDE solution which contains a few parematers. When I fix the parematers it just works fine. See the code--3.nb But what I need is fix all paremeters except say A, and get the solution for each value of A.. I...
Hi All, I have solved the PDE by using Method of Lines. My questions are: how can I check if I got right ansver ( I dont know anatical solution)  and how sould I interpret it. Graphs are reasonable. My Mathematica code is attached. My PDE is at...
Hi All, I would like to label x-intercept as k_c. Any suggestion. Thanks in advance..[mcode]Manipulate[ Plot[B k^4 (-M + E^-Subscript[h, 0] M - E^-Subscript[h, 0] G M +       15 M \[Epsilon] - 15 E^-Subscript[h, 0] M \[Epsilon]) +    k^2 (B...