Let Y = $\left( \begin{array} { l } - 2 \\3 \\10 \\2 \\2\end{array} \right)$

Essay

Let Y = $\left( \begin{array} { l } - 2 \\3 \\10 \\2 \\2\end{array} \right)$ and X = $\left( \begin{array} { l l } 1 & 0 \\1 & 1 \\1 & 3 \\1 & - 1 \\1 & 2\end{array} \right)$ Find $X ^ { \prime }$ X, $X ^ { \prime }$ Y, ( $X ^ { \prime }$ X)^-1 and finally ( $X ^ { \prime }$ X)^-1
$X ^ { \prime }$ Y.