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Let A be a 2 × 2 matrixStatement – 1 : adj (adj A) = AStatement – 2 : | adj A | = | A |

Jayant Kumar , 10 Years ago
Grade 11
anser 2 Answers
Saurabh Koranglekar

Last Activity: 4 Years ago

Dear student

The answer is both right but 2 is not correct explanation of 1

Regards

Vikas TU

Last Activity: 4 Years ago

Answer is (B) Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1.
|adjA| = |A|^(n-1) = |A| 
Now 
adj(adjA) = |A|^n-2 A = A 

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