１ ３
Ａ＝［ ］ _１
２ ４ ，求Ａ =
解:
det(A) = 4 - 6 = -2
A^(-1) = 1/det(A)* [ 4 -3 ]
[ -2 1 ]
= [ -2 3/2 ]
[ 1 -1/2 ]
請問第二步 [ 4 -3 ]
[ -2 1 ]
是從哪來的勒??
還是有更好的算法呢??
數學det 負次方
2009-10-26 4:06 am
回答 (1)
2009-10-26 4:50 am
✔ 最佳答案
Please refer to the following"圖片參考：http://i601.photobucket.com/albums/tt95/physicsworld9999/physicsworld02Oct252050.jpg?t=1256475047
參考: Physics king
收錄日期: 2021-04-19 16:01:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091025000010KK08046