UPSC NDA 2 2016 Mathematics Solved Paper

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Question : 28 of 120

Marks: +1, -0

A=[

1	−1
2	3

] and B=[

2	3
−1	−2

]then which of the following is/are correct?
1. AB(A−1B−1) is a unit matrix.
2. (AB)−1=A−1B−1
Select the correct answer using the code given below:

[NDA II 2016]

1 only
Both 1 only 2
2 only
Neither 1 nor 2

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