For a 2 × 2 matrix A, if A(adjA) = ((10,0),(0,10)) then determinant A equals : (a) 20 (b) 10 (c) 30 (d) 40

For a 2 × 2 matrix A, if A(adjA) = \( \begin{pmatrix} 10 & 0 \\[0.3em] 0 & 10 \end{pmatrix}\)then determinant A equals :

(a) 20

(b) 10

(c) 30

(d) 40

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Option : (b) 10

4 views Answered 2023-02-05 15:29

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