If A is a symmetric matrix of order n, then which of the following is true?
If A is a symmetric matrix of order n, then which of the following is true?
- A. A = A'
- B. A = −A'
- C. A = I
- D. A = 0
Answer: A) A = A'
Explanation: By definition, a symmetric matrix satisfies A' = A. So A = A' is the defining property of a symmetric matrix.
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