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Find the eigenvalues of matrix $A$:
\\[ A=\\begin{pmatrix} \\var{a11}&\\var{a12}\\\\ \\var{a21}&\\var{a22} \\end{pmatrix}\\]

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Please see lecture notes for worked example.

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Find the eigenvalues of $A$.

\n

Let $\\lambda_1$ be the least eigenvalue of $A,\\;\\;\\; \\lambda_1=\\;\\;$[[0]]

\n

Let $\\lambda_2$ be the greatest eigenvalue of $A,\\;\\; \\lambda_2=\\;\\;$[[1]]

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