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DOCUMENTATION.pdf (252523, 2021-03-28)
EXAMPLES.m (454, 2021-03-28)
LICENSE (1066, 2021-03-28)
tridiagonal.m (1608, 2021-03-28)

# `tridiagonal` [](https://www.mathworks.com/matlabcentral/fileexchange/85438-tridiagonal-matrix-algorithm-thomas-alg-tridiagonal) Solves the tridiagonal linear system for using the tridiagonal matrix algorithm (i.e. the Thomas algorithm). ## Syntax `x = tridiagonal(A,d)` ## Description `x = tridiagonal(A,d)` solves the tridiagonal linear system for (an vector), where is a tridiagonal matrix and . . ## Tridiagonal Matrix Convention For this implementation, I use the following convention for denoting the elements of the tridiagonal matrix :        Most references, including the two listed below, have 's ranging from to both in the definition of the tridiagonal matrix and in the algorithm used to solve the corresponding linear system. In this implementation, I have the 's ranging from to ; this makes the algorithm slightly more straightforward to implement. ## Additional Documentation and Examples See "DOCUMENTATION.pdf" for additional documentation and examples.

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