[討論] 全模數學
看板SENIORHIGH作者beatboxa0710 (beatsnake)時間7年前 (2017/04/05 10:37)推噓10(13推 3噓 16→)留言32則, 20人參與討論串1/6 (看更多)
有幾題不確定，請各位大大解惑
填選1
http://i.imgur.com/kPCoqAj.jpg
我a算出來是3/4但是我的b求出來是虛數，我的算法如下(字超醜請見諒)
http://i.imgur.com/TbAgC0z.jpg
不知道是我自己算錯還是題目有誤
而填選四
http://i.imgur.com/P57JBUM.jpg
毫無頭緒
跪求各位大大提供解題過程
再來是單選三
http://i.imgur.com/heCyXA5.jpg
我是這麼想，分母是C16選4(16隻隨便拿4隻)，分子是C8選1(八雙選一雙)乘
上C14選2(剩下14隻隨便取兩隻)
這樣算出來的答案是2/5，不知道哪裡有算錯
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抱歉我剛剛沒附上題目而且是全模不是中模
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推
04/05 11:03, , 1F
04/05 11:03, 1F
→
04/05 11:03, , 2F
04/05 11:03, 2F
噓
04/05 11:24, , 3F
04/05 11:24, 3F
噓
04/05 11:32, , 4F
04/05 11:32, 4F
噓
04/05 11:42, , 5F
04/05 11:42, 5F
※ 編輯: beatboxa0710 (42.78.104.166), 04/05/2017 12:05:56
推
04/05 12:12, , 6F
04/05 12:12, 6F
推
04/05 12:21, , 7F
04/05 12:21, 7F
→
04/05 12:22, , 8F
04/05 12:22, 8F
→
04/05 12:23, , 9F
04/05 12:23, 9F
推
04/05 12:37, , 10F
04/05 12:37, 10F
推
04/05 12:43, , 11F
04/05 12:43, 11F
推
04/05 12:56, , 12F
04/05 12:56, 12F
→
04/05 12:58, , 13F
04/05 12:58, 13F
→
04/05 13:04, , 14F
04/05 13:04, 14F
→
04/05 13:04, , 15F
04/05 13:04, 15F
→
04/05 14:10, , 16F
04/05 14:10, 16F
→
04/05 14:10, , 17F
04/05 14:10, 17F
→
04/05 14:31, , 18F
04/05 14:31, 18F
→
04/05 14:31, , 19F
04/05 14:31, 19F
→
04/05 14:44, , 20F
04/05 14:44, 20F
→
04/05 14:46, , 21F
04/05 14:46, 21F
→
04/05 14:46, , 22F
04/05 14:46, 22F
推
04/05 16:32, , 23F
04/05 16:32, 23F
→
04/05 17:23, , 24F
04/05 17:23, 24F
→
04/05 19:28, , 25F
04/05 19:28, 25F
推
04/05 21:06, , 26F
04/05 21:06, 26F
→
04/05 21:07, , 27F
04/05 21:07, 27F
推
04/06 10:36, , 28F
04/06 10:36, 28F
推
04/06 11:52, , 29F
04/06 11:52, 29F
推
04/06 13:26, , 30F
04/06 13:26, 30F
推
04/06 16:03, , 31F
04/06 16:03, 31F
推
04/07 00:14, , 32F
04/07 00:14, 32F
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