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Question: 2 a matrix m e mn is called skewsymrnetric if...

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(2) A matrix M E Mn is called skew-symrnetric if M =-Mr. Sup- pose that AIO(n) is a parametrized curve of orthogonal matrices with A(0) I (the identity matrix). Prove that A (0) is skew-symmetric. HINT: Differentiate the equation A(t) A(t) I -A(t) = I.

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