4. Consider solving the linear system Ax = b, where A is an rn x n matrix with m < n (under- determined case), b...

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4. Consider solving the linear system Ax = b, where A is an rn x n matrix with m < n (under- determined case), by minimizing

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ve consdo where in matrix w Tinrde. satisfies AX. eMce JL+ = A(月月5% a.nd rxt3 any AX2 b. or ve can savy tthe o

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