作者查詢 / Gwaewluin
作者 Gwaewluin 在 PTT [ MATLAB ] 看板的留言(推文), 共608則
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2F推:在光碟裡面選32位元版資料夾執行裡面的setup.exe04/07 16:28
1F推:subs('x^3-3*x^2+x-p',p,數字)04/01 16:33
1F推:0比較多的話請用稀疏矩陣03/31 13:40
2F→:sparse([],[],[],32400,64800,0)03/31 13:40
1F推:pause03/27 16:24
1F推:未知數不用寫進去啦03/23 13:47
2F→:http://0rz.tw/jak6E 你真的有看這篇網頁嗎?03/23 13:48
3F→:裡面範例的A矩陣只有擺數字,根本沒用到a~d四個變數03/23 13:49
4F→:未知數在分子有啥關係,a/2不是就等於(1/2)*a嗎03/23 13:52
5F→:網頁裡面有個0.5c,那個就是c/2,未知數在分子喔03/23 13:56
10F推:對啊,直接寫成矩陣不是比較容易解嗎03/22 23:37
11F→:symbolic運算速度很慢的,你要求解的明明只是一堆數字03/22 23:38
12F→:說到Ax=b,現在在編輯m檔時會有提示建議不要使用03/22 23:40
13F→:inv(A)*b,而是建議改使用A\b會執行比較快03/22 23:40
21F推:你不用定義a~j,你只要建立好A矩陣和b矩陣03/23 13:00
22F→:然後使用A\b跑出來的10個數字就是a~j的答案了03/23 13:00
24F推:那就是你用錯了,因為a~j是最後才會得到的結果03/23 13:08
25F→:不會一開始出現在程式內需要定義03/23 13:08
1F推:你是裝64位元版的嗎?安裝時記得選自訂就能選toolbox了03/21 22:48
1F推:用nan取代掉03/18 12:30
1F推:你pathdef.m可能是唯讀的03/18 07:47
6F推:請善用ctrl+[以及ctrl+]03/12 21:22