Solving a tridiagonal matrix in matlab using Thomas algorithm

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Arko Dey
Arko Dey on 22 Oct 2021
Answered: Steven Lord on 22 Oct 2021
Hello I have this tridiagonal matrix.
where r = 1/x, g= 1/x^2, s=ln(x)/x^2 and n represents the size.
I'm trying to solve this matrix in Matlab using the Thomas algorithm. I have found some online resources however they dont tend to deal with when n becomes very large, I need to solve matrices that are maybe 20 x 20 or 40 x 40 and so on.
Sorry for this vague description, I'm quite new to using matlab.
  1 Comment
Jan on 22 Oct 2021
There is no "s" in the formula.
20x20 and 40x40 are not "large". The algorithms do not differ for small and large matrices.

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Answers (1)

Steven Lord
Steven Lord on 22 Oct 2021
Is there a particular reason you need to solve this using that specific algorithm? Try using the normal backslash operator (\).


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