[理工] 線代
看板Grad-ProbAsk作者Mathew2010 (eyelid)時間11年前 (2015/01/28 10:07)推噓1(1推 0噓 13→)留言14則, 5人參與討論串107/120 (看更多)
1. 若(X^t)AX > 0 A沒有規定是實對稱矩陣，則A的特徵值皆大於零？
2. 若(X^t)AX < 0 A沒有規定是實對稱矩陣，則A的特徵值皆小於零？
3. 正交對角化的條件是？
4. A,B為方陣
A,B可同步對角化iff AB=BA?
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