6 marksInverse of a 2x2 Matrix
CSEC Mathematics · January 2006 · Paper 2 · Question 14(b)(i)
The matrix M = (3 1; 2 6).
Find M^-1, the inverse of M.
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Practise this questionOther parts of this question
- 14(a)(i)Calculate, in terms of x, the determinant of L.[3 marks]
- 14(a)(ii)Calculate the values of x given that L is singular.[3 marks]
- 14(b)(ii)Hence, calculate the value of x and of y for which M(x; y) = (12; -8).[6 marks]
- 14(c)(i)Calculate the image, (x', y'), of (3, -1) under N.[3 marks]
- 14(c)(ii)Calculate the coordinates of the point, (x, y), which is mapped by N onto (7, 4).[3 marks]
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