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question mark

If A is singular matrix, then adj(A) is

  • (a) Non-singular
  • (b) singular
  • (c) Symmetric
  • (d) Not defined

Aniket Singh , 7 Months ago
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anser 1 Answers
Askiitians Tutor Team

If matrix A is singular, it means that its determinant is zero. The adjugate (or adjoint) of a matrix, denoted as adj(A), is calculated using the determinants of the minors of A. For a singular matrix, the adjugate will also be singular.

Answer Explanation

To clarify further:

  • Singular Matrix: A matrix with a determinant of zero.
  • Adjugate Matrix: The transpose of the cofactor matrix, which is used in finding the inverse of a matrix.
  • Determinant of Adjugate: If A is singular, then adj(A) is also singular.

Final Answer

The correct choice is (b) singular.

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