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Vectors in two and three dimensions — Question 289

Original QCE Vault practice · 1 mark

Q289 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 289

Let a=(2,−3,1)\mathbf a=(2,-3,1) and b=(−1,0,0)\mathbf b=(-1,0,0). The scalar projection of a onto b is
(A)
22
(B)
14\sqrt{14}
(C)
−1-1
(D)
−2-2
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