Question:
Which of the following statements is not correct?
Which of the following statements is not correct?
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A diagonal matrix is a square matrix in which all off-diagonal elements are zero, but diagonal elements can be non-zero.
Updated On: Jan 13, 2026
- A diagonal matrix has all diagonal elements equal to zero.
- A symmetric matrix \(A\) is a square matrix satisfying \(A' = A\).
- A skew symmetric matrix has all diagonal elements equal to zero.
- A row matrix has only one row.
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The Correct Option is A
Solution and Explanation
- A diagonal matrix is a square matrix where all off-diagonal elements are zero. The diagonal elements can be non-zero.
- A symmetric matrix \(A\) satisfies \(A' = A\), meaning it is equal to its transpose.
- A skew symmetric matrix has all diagonal elements equal to zero. - A row matrix has only one row, as the name suggests.
Thus, the statement "A diagonal matrix has all diagonal elements equal to zero" is false because the diagonal elements can be any value.
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