Please, help me with this Let A be a real, nXn, symmetric matrix for which there is some positive integer m such tha tA^m = I. If m is odd, prove that A^m = I. If m is even, what can you say about A? Give its Jordan form. Thank you!
Last edited by CaptainBlack; Nov 22nd 2008 at 10:57 PM. Reason: removed formmating
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