JEE Advanced2022Paper 2MATH-III
Q.
If , then which of the following matrices is equal to ?
- A
- B
- C
- D
Solution
Write , where . Note that has rank 1 with (since the trace of is zero and its determinant is zero, so is nilpotent).
Verifying: .
By the binomial expansion, .
For : .
The answer is option (A).
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