Question: ansewrnumber 3 please In Exercises ( 1-4 ), find a least-squares solution of ( A mathbf{x}=mathbf{b} ) by (a) constructing the normal equations for (

ansewrnumber 3 please In Exercises $ 1-4 $, find a least-squares solution of $ A \mathbf{x}=\mathbf{b} $ by (a) constructing the normal equations for $ \hat{\mathbf{x}} $ and (b) solving for $ \hat{\mathbf{x}} $. 1 2 answers

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