Faster inverse of a lower triangular matrix than inv(A)?
14 views (last 30 days)
Show older comments
Dear All,
I have a sparse lower triangular matrix A. I want to obtain the inverse of A. A has a size of 6000 X 6000. I find inv(A) takes more than 5 seconds. I do not know if there is a faster approach to get the inverse of A?
Thanks. Bei
0 Comments
Accepted Answer
More Answers (1)
Torsten
on 19 Oct 2018
See here
https://de.mathworks.com/matlabcentral/answers/332233-updating-inverse-of-a-lower-triangular-matrix
why it is a bad idea to invert a lower triangular matrix.
See Also
Categories
Find more on Linear Algebra in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!