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Which of the following is/are incorrect?...

Which of the following is/are incorrect? (i).Adjoint of symmetric matrix is symmetric (ii).Adjoint of unit matrix is a unit matrix (iii).`A(adjA)=(adjA)A=!|A|I` (iv). Adjoint of a diagonal matrix is a diagonal matrix

A

(i)

B

(ii)

C

(iii)

D

(iv)

Text Solution

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The correct Answer is:
D
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