NDA 2024 Mathematics question
Consider the following statements in respect of a non-singular matrix of order : 1. 2. If , then is identity matrix of order 3. If , then is identity matrix of order Which of the statements given above are correct?
Answer: (A)
Solution
1: for every square matrix, so both sides are equal; correct. 2: multiplying by gives ; correct. 3: multiplying $ =
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