→ QQkimi:好像少be動詞...XD 11/02 22:08
※ 編輯: iyenn 來自: 123.193.214.165 (11/02 22:11)
→ iyenn:意思到就好XD 11/02 22:12
※ 引述《tim760323 (胖子)》之銘言：
: 證明:
: For any matrix A , e^A is always nonsingular
: 不知道有沒有人會解這題
: 感激不盡!!
let Ax=kx
k is eigenvalue of A
and e^k is eigenvalue of e^A
because e^k ,it's not always equal to zero
s.t. det(e^A)=/=0 =>e^A is nonsingular
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