证明：（a）如果A是对称正定阵，则A -1也是正定阵；（b）如果A是对称正定阵，则A可唯一写成A=L TL，其中L是具有正对角元的下三角阵。 -题库考试答案搜索网

证明：（a）如果A是对称正定阵，则A -1也是正定阵；（b）如果A是对称正定阵，则A可唯一写成A=L TL，其中L是具有正对角元的下三角阵。

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2022-01-10 20:44

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