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Describe all least-squares solutions of the equation Ax=b. A=111101101001,b=4712 The least-squares solutions are all vectors of the form x^=+x3, with x3 free. (Simplify your answers.)

Describe all least-squares solutions of the equation Ax=b. A=111101101001,b=4712 The least-squares solutions are all vectors of the form x^=+x3, with x3 free. (Simplify your answers.) Find (a) the orthogonal projection of b onto ColA and (b) a least-squares solution of Ax=b. A=111242,b=117 a. The orthogonal projection of b onto ColA is b^= (Simplify your answers.)

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