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linear_algebra/LU_tridiag.m
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| function [ud,uo,lo]=LU_tridiag(e,f,g) | |
| %This function takes 3 vectors as inputs and calculates the | |
| %LU-decomposition of a tridiagonal matrix. The output is 3 | |
| %vectors, the diagonal of the upper matrix, and the two off- | |
| %diagonal vectors of the lower and upper matrices. | |
| A = gallery('tridiag', e, f, g); | |
| [L,U,P]=lu(A); | |
| ud = U; | |
| lo = L; | |
| uo = P; | |
| end |