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作者 Vulpix 在 PTT [ Math ] 看板的留言(推文), 共7170則
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12F推: 那三段一樣長的,如果有跟你說長度是6就可以算了。05/06 17:40
1F推: sin^2 (x+2y)05/02 18:05
9F→: 不礙事啊。04/29 19:28
13F推: 看到的第一印象是用生成函數,也就是z轉換。因為那05/01 13:15
14F→: 個convolution實在太搶眼了。實際做起來也挺快的。05/01 13:15
3F推: 補充寫爽的而已吧?04/21 18:23
11F推: 中文不是問題,英文也很干擾閱讀。不懂函數概念,04/22 18:39
12F→: 這件事很單純,就還沒教而已。04/22 18:39
18F推: 沒有。你這本是資優教材吧。04/25 15:36
2F推: 單價不是收入。04/18 21:00
3F推: 你收入負的吔……04/18 21:44
4F推: x是銷量,單價是100-x/3。04/19 01:02
1F推: 1. 一-二-三吧。不過這題直接展開也不會很複雜。04/10 00:46
2F→: 2. 用Sylvester's determinant。中文有時候會把那04/10 00:46
3F→: 個技巧稱為提列灌行。04/10 00:46
3F推: 數學也可以提供純粹的樂趣。只從工作、需要、利益04/10 00:11
4F→: 、複雜程度來看待數學,就不夠全面。同一個句型也04/10 00:11
5F→: 可以套在任何一個學科或嗜好上。04/10 00:11
18F推: 60跟8不是前後步驟,不該相乘。04/05 14:17
22F推: a1b1c1=000不只8個y。而342的時候只有1個y。04/05 14:41
23F→: 總之,lcm應該轉換成質因數的最大值。max(a1,a2)=304/05 14:44
24F→: *質因數的次方數的最大值04/05 14:44
8F推: 8的長那樣不是正常現象嗎?2,0,-6,4也一樣啊。04/03 23:40