矩阵例例11例例11解解解解设0nnA为实方阵,且T()ijijAaAA:(1)求证A可逆;(2)当3n为奇数时,求||A的值.TAA||若A0,则0,0A,||0,.AA总之可逆(1)(1)||AAAAAET||;AAAE(0);与A矛盾0(,1,2,,)aijijn()||A0要证实22111T221nnnnaaAAaa(2)(2)(2)(2)2||1nA2||||nAA||1A例例11例例11解解解解||AAAAAETAAT||AAAE(2)n... 2024-06-0811.27 MB9页
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