Igcse Model Questions Vol1 2018 Mathematics Question 16
Practice objective / multiple choice question 16 from the 2018 Igcse Model Questions Vol1 Mathematics examination.
Vector \(\mathbf{a}\) is \((2,\,-1,\,3)\) and vector \(\mathbf{b}\) is \((1,\,4,\,k)\). A vector \(\mathbf{c}\) is defined by \(\mathbf{c}= \mathbf{a}+ \lambda \mathbf{b}\). It is known that \(\mathbf{c}\) is perpendicular to \(\mathbf{a}\) and that \(|\mathbf{c}| = 10\). Find the possible ordered pairs \((k,\lambda)\).
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This is Igcse Model Questions Vol1 2018 Mathematics Question 16. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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