Teaching DSSSB TGT Mock Test 2025 Mathematics Matrices Operations on Matrices

यदि \(A=\left[\begin{array}{l}1 \\ 2 \\ 3\end{array}\right]\) है, तो det(I + AA') का मान क्या है, जहाँ I, 3 × 3 का तत्समक आव्यूह है?

1

15

2

6

3

0

4

-1

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