Post Utme Uniben 2021 Mathematics Question 39

Practice objective / multiple choice question 39 from the 2021 Post Utme Uniben Mathematics examination.

Post Utme Uniben 2021 Mathematics Objective / Multiple Choice
Question 39 POST_UTME_UNIBEN • 2021 • MATHEMATICS • objective

Find the vector ( mathbf{a} ) such that \(\mathbf{a} \cdot \mathbf{b} = 10\) and \(\mathbf{a} \cdot \mathbf{c} = 5\), where \(\mathbf{b} = 2\mathbf{i} + 3\mathbf{j}\) and \(\mathbf{c} = \mathbf{i} - 2\mathbf{j}\).

Answer Options

Correct Answer A. \(3\mathbf{i} - \mathbf{j}\)
B. \(2\mathbf{i} + \mathbf{j}\)
C. \(\mathbf{i} + 2\mathbf{j}\)
D. \(\mathbf{i} - 2\mathbf{j}\)
Correct Answer
A
Correct Option:
\(3\mathbf{i} - \mathbf{j}\)

About This Question

This is Post Utme Uniben 2021 Mathematics Question 39. It is one of the objective questions from the 2021 Post Utme Uniben Mathematics examination.

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