For each of the following systems Ax = b, find all least squares solutions: (a) A = 1 2 2 4 1 2 , b = 3 2 1 (b) A = 113 131 124 , b = 2 0 8

L10 - 4 Recall: Area of a sector with a central angle of θ and a radius of r is sinθ Theorem. lim =1 θ→0 θ B B B 1 D 1 θ θ θ O A C O A C O A 1 area of sector COD < area of ▯BOC < area of sector AOB