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If A is any square matrix …

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If A is any square matrix of order 3 × 3 such that |A| = 3, then the value of |adjA| is? 3 13 9 27

Posted by Shubham Mamgain 4 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Siya Soni 4 years, 2 months ago

|adj A|=|A|^n-1 n is the order of determinent |A|^3-1=|A|^2......(1) |A|=3 put this value in eq (1) 3^2=9 Hence 9 is the required answer

Tanisha Yadav 4 years, 2 months ago

9

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