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Which of the following is/are correct ? (i) Adjoint of a symmetric matrix is also a symmetric matrix. (ii) Adjoint of a diagonal matrix is also a diagonal matrix. (iii) If A is a square matrix of order n and lambda is a scalar, then adj (lambda A)= lambda^(n) adj(A) (iv) A (adj A) = (adj A) A = |A| I |
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Answer» Only (i) |
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