Mathematics · Linear Algebra
Identify which one of the following statements regarding matrices and determinants is CORRECT:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The operation of direct division is valid and allowed in matrix algebra.
- 2The value of a determinant changes if all its rows and columns are interchanged.
- 3If two columns of a determinant are interchanged, the sign of the determinant does not alter.
- 4A-1 is equal to Adj(A) if the value of the determinant of A is unity.✓
Correct answer
A-1 is equal to Adj(A) if the value of the determinant of A is unity.
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