A B are nXn order matrices 1.if A^t=-A then det A=0 2.if A B are simetric then AB is simetric too for each one of these is it true or false?
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Originally Posted by transgalactic A B are nXn order matrices 1.if A^t=-A then det A=0 False. It is only true if is odd. For even, take: 2.if A B are simetric then AB is simetric too False. It is true if . Try to find a counterexample. Regards.
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