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.

Question

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.

Quizplus · Accepted Answer

The Answer of 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.

Let Y = (−231022)\left( \begin{array} { l } - 2 \\3 \\10 \\2 \\2\end{array} \right)​−231022​​

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