Info

此问题已关闭。 请重新打开它进行编辑或回答。

solve Ax=b by singular value decomposition

1 次查看（过去 30 天）
Jiapeng
Jiapeng 2022-11-16
关闭： John D'Errico 2022-11-16
After I've got U,S,V by [U,S,V] = svd(A), how do I get x?
Is it x = (V*(S^(-1)*U')*b?
  3 个评论
显示 1更早的评论
Steven Lord
Steven Lord 2022-11-16
Is there a particular reason you're using svd rather than simply using the \ operator?
Torsten
Torsten 2022-11-16
Is it x = (V*(S^(-1)*U')*b?
No, only if S has all singular values not equal to 0.
Compare
https://de.mathworks.com/help/matlab/ref/pinv.html
Section
Algorithms
at the bottom of the web page.

此问题已关闭。

回答（0 个）

此问题已关闭。

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by