设A，B为n阶对称矩阵，下列结论不正确的是( )．

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问题设A，B为n阶对称矩阵，下列结论不正确的是( )．

选项 A、AB为对称矩阵
B、设A，B可逆，则A^-1+B^-1为对称矩阵
C、A+B为对称矩阵
D、kA为对称矩阵

答案A

解析

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考研数学三

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设A，B为n阶对称矩阵，下列结论不正确的是( )．

考研数学三

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