How can I quickly obtain the inverse of a square sparse matrix?

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Benson Gou 2021-6-22

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回答： J. Alex Lee 2021-6-22

采纳的回答： J. Alex Lee

Dear All,

I have a square sparse matrix A. I use the following way to obtain its inverse:

invA = A \ eye(size(A));

I am wondering if there is a faster way to obtain invA.

Thanks a lot.

Benson

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J. Alex Lee 2021-6-22

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potentially, if you have more information about the properties of A, you can specify them in a call to linsolve

https://www.mathworks.com/help/matlab/ref/linsolve.html#mw_f23b9376-00ee-4eba-8af3-48ee240f0b77

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