How can I triangular a matrix

5 次查看（过去 30 天）
Amir Ehsani
Amir Ehsani 2012-10-28
评论： James Tursa 2022-5-9
I have a n*n matrix. I want to change it to a triangular matrix. please help me.
  1 个评论
James Tursa
James Tursa 2022-5-9
Is your homework assignment to code up your own Gauss elimination scheme to get the upper triangular matrix?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Matt J
Matt J 2012-10-28
There are commands TRIU and TRIL to convert a matrix to upper and lower triangular, if that's what you mean.
  2 个评论
Amir Ehsani
Amir Ehsani 2012-10-28
Thanks. But actually I want transform a n*n matrix to upper triangular matrix to calculate the determinant. I have a big problem with n*n matrix determinant.n>=16
Matt J
Matt J 2012-10-28
编辑：Matt J 2012-10-28
  1. If you want to transform the matrix to upper triangular, then why is TRIU inappropriate?
  2. How will this transformation help in computing the determinant? Such a transformation would change the determinant.
  3. Why is n>=16 a big deal? MATLAB will do determinants pretty easily for n in the thousands
>> A=rand(3000); tic; det(A); toc
Elapsed time is 0.591271 seconds.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Linear Algebra 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by