[理工] [線代]-正定
正定矩陣=>所有特徵根皆為正
但所有特徵根皆為正就不一定是正定矩陣吧??
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我有看到一題 假如線性T 是正定 證明 T 也正定
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但我的講義是寫說因為T正定 <=> 特徵根皆為正 所以T 特徵根也為正 所以...正定
感覺有點怪...
(我不是補小黃的..不要再跟我說小黃幾頁..)
請高手解惑 謝謝
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