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11- Let A be the line x = x in the 2-plane. A is a subspace of R. Equip R with the 1-norm. Find

11- Let A be the line xix2 in the x1x2-plane. A is a subspace of R2. Equip R2 with the 1-norm. Find all points in A which best approximate the pointx ER?

11- Let A be the line x = x in the 2-plane. A is a subspace of R. Equip R with the 1-norm. Find all points in A which R. best approximate the point x =

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