Find all the eigenvalues and eigenvectors of each of the following matrices over $\mathbb{C}$. (a) $\left\begin{array}{11}1 & 1 \ 1 & 1\end{array} ight]$ (b) $\left(\begin{array}{cc}i & 2+i 2-i & - i\end{array} ight]$ (c) $\left(\begin{array}{cc)2 & -7 10 & 2\end{array} ight]$ (d) $\left(\begin{array}{ccc}0 & 0 & 1 10 & -2 & 0 111 & 0& \end{array} ight]$ CS. SD. 165