Let A= ( array rrr 0 & 0 & -1 0 & -1 & 0 -1 & 0 & 0 array ) , the only correct statement…
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
Let \[A=\left(\begin{array}{rrr}
0 & 0 & -1 \\
0 & -1 & 0 \\
-1 & 0 & 0
\end{array}\right)\], the only correct statement about the matrix A is
- A is a zero matrix
- A = (-1)I, where I is a unit matrix
- A-1 does not exist
- A2 = I
Answer
(D) A 2 = I
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