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Civil Engineering QUESTION #6563
Question 1
An \(n \times n\) matrix is said to be symmetric when:
  • It equals its own transpose✔️
  • Its determinant equals zero
  • It is of 2nd order
  • None of the above
Correct Answer Explanation
A matrix is symmetric if \(A = A^T\), i.e., element \(a_{ij} = a_{ji}\) for all \(i\) and \(j\).