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Consider the linear system in matrix form AT b where 2 3 1 A b 3 4 1 9 The sum of the elements in

Consider the linear system in matrix form AT b where 2 3 1 A b 3 4 1 9 The sum of the elements in the solution vector x A 12 B 16 11 C 4 D 16 2012 1 X2 i e x x is given by

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