Solving a tridiagonal matrix in matlab using Thomas algorithm

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Arko Dey
Arko Dey 2021-10-22
回答： Steven Lord 2021-10-22
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.
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Jan
Jan 2021-10-22
编辑：Jan 2021-10-22
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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回答（1 个）

Steven Lord
Steven Lord 2021-10-22
Is there a particular reason you need to solve this using that specific algorithm? Try using the normal backslash operator (\).

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