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Student Support Forum: 'Eigenvalue[] returns Root[] function' topicStudent Support Forum > General > "Eigenvalue[] returns Root[] function"

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Han
10/30/08 08:36am

Good day,
I am trying to find the Eigenvalues to this matrix:
A = {{a,r*E3,r*E2},{r*E3,a,r*E1},{r*E2,r*E1,a}}
I was expecting to obtain three expressions in the form f[a,r,E1,E2,E3], however, Mathematica just returned three roots of the characteristic polynomial using the Roots[] function. How do I obtain the desired expressions from these roots functions?
Any help is appreciated. Please see attached file.

Attachment: Eigenvalues.nb, URL: ,
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