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作者 reye 在 PTT [ Math ] 看板的留言(推文), 共158則
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4F推: 兩個方程式相減求最大值就好了09/09 17:40
5F推: 它求的h是垂直地面,不是垂直斜面09/09 17:43
6F推: 如果h的定義是要垂直斜面也不難09/09 17:46
7F→: 找出拋物線上某點,該點切線斜率等於0.2就好了09/09 17:47
17F推: 每種壽司各被拿走一盤,三種可能;09/08 20:36
18F→: 每種壽司各被拿走兩盤,也是三種可能09/08 20:37
19F→: (3+3)^1009/08 20:37
1F推: 這個做法標準又直觀,考場上是想得到的01/24 16:01
2F→: 就是直接把中文翻成數學式子01/24 16:01
1F推: (C9取4)/(C12取4)01/13 21:06
2F→: 分子是8天不停電先排好,9個空格給4天停電安插01/13 21:07
4F推: 樓上這做法乾淨俐落,漂亮01/12 05:51
1F推: 把ma用b,c,cosA表示出來,其他以此類推01/05 19:55
2F→: 延長中線一倍去做平行四邊形01/05 19:56
7F→: 9/8沒錯01/07 01:19