Find the projection matrix P = aa/aa onto the line through each vector a. Verify in both cases that P2 = P. Multiply Pb in each case to compute the projection p. (a) a P = 9. [1.66667 If b 2, then p = Pb = 1.66667 12 1.66667 (b) a = P = If b 3, then p = Pb = 3

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