Faster inverse of a lower triangular matrix than inv(A)?
7 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
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 Commenti
Risposta accettata
Più risposte (1)
Torsten
il 19 Ott 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.
Vedere anche
Categorie
Scopri di più su Operating on Diagonal Matrices in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!