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作者 stkj9502 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共27則
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2F→:所以答案是b對嗎?02/14 18:02
4F→:那第二題呢?02/15 10:20
6F→:我手邊沒答案,這是中正99年的題目02/15 22:05
10F→:問題是題目條件沒reduce阿~~02/16 00:16
12F→:我去翻小黃的說第二題是a02/17 11:54
1F→:直接微分=0求出t再代回去就是極值,我是不懂50%那個觀念02/08 21:36
4F→:感謝,我一發完文就發現少代一個範圍XD01/28 16:09
3F→:我懂基底有很多種,只是不知道自己的求法是否正確~11/06 19:27
10F→:https://db.tt/cFIROaT111/07 11:21
11F→:那在請問一下,orthigonal matrix條件不是第一行向量內積11/07 11:23
12F→:=1還有和其他行向量內積=0嗎?11/07 11:23
13F→:這題第一行向量內積=/=1,還是可以先做行運算?11/07 11:24
14F→:作這題突然卡住....11/07 11:27
16F→:我知道orthonomal是orthogonal單位化,可是老師的求矩陣11/07 11:40
17F→:未知數的例題寫因為矩陣orthogonal所以第一行內積=0,所11/07 11:40
18F→:以又搞亂了= =11/07 11:40
19F→:https://db.tt/jjNHZ94o 就是這題11/07 12:05
20F→:內積=1,我說錯了11/07 12:06
22F→:我懂了,感謝~~11/07 12:44
2F推:謝謝^ ^10/05 14:56
4F→:x=1的話其實我是有想第一次擲到3的機率1/6第二次擲到非410/05 11:09
5F→:的機率5/6第三次擲到4的機率1/6,相乘就是10/05 11:09
6F→:x=2的話,第一次非3非4所以4/6,第二次和第三次一定要3和10/05 11:11
7F→:4所以都乘1/6,但我總覺得我的想法好像有錯,所以上來請10/05 11:11
8F→:教10/05 11:11
9F→:第四的話,因為前2次限定不能出現3或4因為條件有要求y=310/05 11:40
10F→:,所以是4/6*4/6,第三次就1/6,這是4之前的情況10/05 11:40
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