看板 Math 關於我們 聯絡資訊
http://i754.photobucket.com/albums/xx185/rpd11140/other/IMG_0031.jpg
33題 http://i754.photobucket.com/albums/xx185/rpd11140/other/IMG_0032.jpg
39題 http://i754.photobucket.com/albums/xx185/rpd11140/other/IMG_0033.jpg
44題 http://i754.photobucket.com/albums/xx185/rpd11140/other/IMG_008.jpg
45的b http://i754.photobucket.com/albums/xx185/rpd11140/other/IMG_0039.jpg
53題 不會解,想參考各位的解題過程?感謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 112.104.48.153
powerkshs :trace不就對角線元素相加-.-? 03/08 22:18
rr8r8r8r8tw :不需要其餘為0嘛? 03/08 22:28
powerkshs :不用 03/08 22:39
handsomepow :33題AA 不就相乘就好0.0? 看不清楚整個問題 03/08 23:04
powerkshs :題目問甚麼照做不就好了-.- 03/08 23:12
rr8r8r8r8tw :45題b答案是I 耶,這怎算的 03/08 23:15
smartlwj :直接矩陣乘起來就是I了 03/08 23:23
handsomepow :B*B=I 矩陣相乘而已... 03/08 23:24
rr8r8r8r8tw :[1 0] 03/08 23:34
rr8r8r8r8tw :[0 1]=I是? 03/08 23:35
rr8r8r8r8tw :還是不懂i怎用出來的 03/08 23:41
rr8r8r8r8tw :還有44怎算? 03/09 00:07
sm008150204 :44. tr(AB-BA) = tr(AB)-tr(BA) = 0 ≠ tr(I) 03/09 00:18
rr8r8r8r8tw :I是inverse嘛? 03/09 01:54
PaulErdos :........ 03/09 02:42
PaulErdos :你是不是應該也先唸點書再發問.. 03/09 02:42
powerkshs :推樓上............ 03/09 08:13