Eigenvalues

Eigenvalues[m] gives a list of the eigenvalues of the square matrix m. 

Eigenvalues[{m,a}] gives the generalized eigenvalues of m with respect to a. 

Eigenvalues[m,k] gives the first k eigenvalues of m. 

Eigenvalues[{m,a},k] gives the first k generalized eigenvalues.

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