defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Matrices Types of Matrices

If \(A = \left[ {\begin{array}{*{20}{c}} a&b\\ c&{ - \;a} \end{array}} \right]\) is an involuntary matrix then which of the following option is true ?

1
a2 + bc = 1
2
a2 - bc = 0
3
a = 0
4
None of these
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