Advanced Search

Question: Very bad Eigenvalues(...) rounding errors? Solved.

Question:Very bad Eigenvalues(...) rounding errors? Solved.

shiMusa 5
error eigenvalues
October 08 2014
0

Hello,In short: I try to get the eigenvalues of a 16x16 complex matrix with one variable B__z. I know, the vales are very small (~10^-24), so I multiply with 10^24 and collect B__z. Now, when I use Eigenvalues(H) [H is the matrix] the result is just wrong:

test.mw

(same with original values) - compared to Mathematica which solves and plots in about 1 sec:

Where is the problem? What should I do? Any suggestions?
Please Wait...