Neco Model Questions Vol1 2021 Mathematics Question 38
Practice objective / multiple choice question 38 from the 2021 Neco Model Questions Vol1 Mathematics examination.
Vectors \(\mathbf{a}= (1,2,-1)\), \(\mathbf{b}= (k,1,3)\) and \(\mathbf{c}= (2,k,4)\) are in three‑dimensional space.\n\n(a) Determine the real value(s) of \(k\) for which the three vectors are coplanar.\n\n(b) For the smallest positive value of \(k\) obtained in part (a), compute the magnitude of the vector \(\mathbf{v}= \mathbf{a}+2\mathbf{b}-\mathbf{c}\).
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This is Neco Model Questions Vol1 2021 Mathematics Question 38. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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