• 2022-07-27
    [tex=0.643x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 是正定阵, 问 [tex=1.143x1.071]DFelGZAPNOqMgdbfKVoEHA==[/tex] ([tex=2.357x1.071]PPNRmBnf1zzu187F3xBpCA==[/tex])是否也是正定阵?[input=type:blank,size:4][/input]