Question

The sum of the eigenvalues 𝜆1 and 𝜆2 of matrix 𝐵 = 𝐼+𝐴+𝐴2 , where
$\left[ {\begin{array}{cc} 2&1 \\\ -0.5 &0.5 \\\ \end{array} } \right]$
is_____ (rounded off to two decimal places).

Answer 1

The correct answer is: 7.70 to 7.80 (approx)