Question: Let $A=left(begin{array}{11}1 & 1 1 1&1 1 & 3 1 & 1end{array} ight)$ and $b=left(begin{array}{c} -1 W1-1end{array} ight)$ a. Find the least squares

$Let $A=\left(\begin{array}{11}1 & 1 1 1&1 1 & 3 \\ 1$

Let $A=\left(\begin{array}{11}1 & 1 1 1&1 1 & 3 \\ 1 & 1\end{array} ight)$ and $b=\left(\begin{array}{c} \\ -1 W1-1\end{array} ight)$ a. Find the least squares solution to $A x=b$. b. Determine whether the least squares solution found in part (a) is a solution to $A x=b$. CS.JG.085

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