imo class 12 matrices

In a skew-symmetric matrix, all principal diagonal elements are:

VAVidaara Admin Asked 1mo ago 1 views 0 answers

In a skew-symmetric matrix, all principal diagonal elements are:

  • A. 1
  • B. Negative
  • C. 0
  • D. Positive

Answer: C) 0

Explanation: For a skew-symmetric matrix, a(i,i) = −a(i,i), which means 2a(i,i) = 0, so a(i,i) = 0 for all i.

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