® A square matrix A is said to be singular or non-singular according as |A| = or |A| ≠ . ® If AB = BA = I, where B is square matrix, then B is called inverse of A. Also A – = B or B – = A and hence (A – ) – = A. ® A square matrix A has inverse if and only if A is non-singular.
📖 generic · CBSE Class 12th English Medium · MATHEMATCS PART-1 · Page 27table
® A square matrix A is said to be singular or non-singular according as
Chapter 4: DETERMINANTS · MATHEMATCS PART-1
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