diagonalizing a matrix in two way
显示 更早的评论
I diagonalize a matrix by using eig and then I change the matrix to symbolic for by A=sym(A) and them diagonalize it again, the two orthogonal matrix that I get from this two ways are not the same and I do not know why. ``
采纳的回答
Walter Oevel
2012-10-15
0 个投票
Eigenvectors are not unique.
1) The ordering as columns/rows of a matrix must match the ordering of the eigenvalues in the diagonalized matrix.
2) The normalization of the eigenvectors is rather arbitrary.
The strategies for ordering and normalization in MATLAB's eig may be different for numerical input and for symbolic input.
If you have more detailed questions, please provide more information on the example(s) that puzzle(s) you (in particular, provide the input matrix).
Regards,
Walter Oevel
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Operating on Diagonal Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
