I need program to LU decomposition of tridiagonal matrix?

How can help to a program LU decomposition of tridiagonal matrix

Answer 1

[Jan]

I find many instructions and even Matlab implementations, when I ask an internet search engine for "Matlab lu tridiagonal". E.g.:

• http://www.webpages.uidaho.edu/~barannyk/Teaching/LU_factorization_tridiagonal.pdf
• http://de.mathworks.com/matlabcentral/fileexchange/1359-fast-tridiagonal-system-solver
• http://www.sci.sdsu.edu/Faculty/Don.Short/math541/matlabcode.htm#TRIDIAGONAL

So my actual answer is a meta-message: Asking Google before posting is more efficient.

Answer 2

[Steven Lord]

Simple: just call the lu function built into MATLAB.

If you need to do this for homework, your textbook probably has pseudocode for the LU decomposition that you can translate into MATLAB code.

[Malak]

How??