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 Form 4 Mathematics Paper 2 Holiday Revision Questions and Answers

Given the column vectors p =#((−1),(2),(1)), q =((2),(−4),(8)),r=((5),(−10),(−5))# and that vector a =#3p - 1/2 q + 2/5 r, express a as a column vector and hence find its magnitude to 3 significant figures.

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