Eigenvalues

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

Examples

Eigenvalues of a matrix:

Eigenvalues[{{1, 2}, {3, 4}}]
(* {(5 + Sqrt[33])/2, (5 - Sqrt[33])/2} *)

Numerical eigenvalues:

Eigenvalues[{{1., 2.}, {3., 4.}}]
(* {5.37228, -0.372281} *)

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