CSEC Mathematics · May/June 2013 · Paper 2 · Question 11(b)(ii)
Given that matrix M = [[2, 1], [4, 3]].
Show that M⁻¹M = I.
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Practise this questionOther parts of this question
- 11(a)(i)a)Express in terms of a and b the vector AB.[2 marks]
- 11(a)(i)b)Express in terms of a and b the vector PQ.[2 marks]
- 11(a)(ii)State TWO geometrical relationships that exist between OB and PQ. Give reasons for your answers.[2 marks]
- 11(b)(i)Evaluate M⁻¹, the inverse of M.[2 marks]
- 11(b)(iii)Use a matrix method to solve for r, s, t and u in the equation [[2, 1], [4, 3]] * [[r, s], [t, u]] = [[2, 1], [4, -1]].[5 marks]
More practice: the rest of this paper · more Multiplicative Inverse of a Non-Singular Square Matrix questions · all CSEC Mathematics past papers