B= [b₂ b₂] = [ 1 2 3 5 -2 2-3 and a = (-21, 47, 2, 4) U = { b₁,b2]} and a = Compute BTB and uplar a. If BTB = [108], why is U an 35 orthogonal basis for Col A? b. Find a least-square solutions to Ax=b₂ this least-square or not whether Explain Hudsolution is unique, 8

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A: It is an important part of statistics. It is widely used.

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Q: Answer considering the matrix with th e given vectors as its columns

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