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a) b) c) Find the least square solution of the following system of equations x + y = 2 x + y = 1

a) b) c) Find the least square solution of the following system of equations x + y = 2 x + y = 1 x - 4y = 2 x + 5y = 1. Find the projection matrix of A = r1 1 1 1-4 15 compute the projection of b = (2,1,1,2) onto the column space C(A).

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