Solution
= Solution
The <characteristic polynomial> is $(1/2-\lambda)(-1/2-\lambda)-2=\lambda^2-9/4$. Its two <roots> give the <eigenvalues>
$$
\boxed{\lambda=\frac32,\quad-\frac32.}
$$
= Solution
The <characteristic polynomial> is $(1/2-\lambda)(-1/2-\lambda)-2=\lambda^2-9/4$. Its two <roots> give the <eigenvalues>
$$
\boxed{\lambda=\frac32,\quad-\frac32.}
$$