For an n x n matrix, does matlab calculate the eigenvalues in some pattern? If not, is there a way to make it so?
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I have two predetermined matrices A,B of size 4 x 4. I have a function whose independent variable is some complex number z and produces the eigenvalues of (A-z*B). Upon plotting however, strange blotches show up which I suspect are areas of discontinuity. However, the function is not discontinuous. Therefore, I think MATLAB may be mixing up the eigenvalues somehow. I don't know how the eigenvalues are organized but is there a way to ensure that the eigenvalues are grouped correctly?
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Matt J
2013-6-4
Since A and B are simply 4x4, why don't you tell us what they are and give us the range of z needed to duplicate your plots?
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