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作者 itsweb 在 PTT 全部看板的留言(推文), 共4339則
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1F推: disjoint感覺是在說互斥11/21 11:53
5F推: 等於是主歌唱第一大段+副歌唱第二大段09/28 12:41
1F推: 誰放鴿子!09/20 12:56
1F推: The past is the key to the future 系服?09/19 15:28
4F推: 第二個問題 如果要上上下下就是靠手跟頭的指向09/20 12:48
5F→: 加上手(大划手)腳(蛙腳)動力09/20 12:48
6F→: 如果下潛就要另外靠折腰的力量09/20 12:49
7F推: 如果要維持不要上上下下 最好貼池底附近(阻力小)09/20 12:53
8F→: 一開始最好就潛到正確位置 不夠深前進容易上上下下09/20 12:53
9F→: 因而浪費力氣在維持不要上下09/20 12:54
7F推: 同上~08/30 11:01
11F→: 邏輯在排列組合那一章提一點點而已(大概五句話08/28 13:54
25F推: 高中微積分沒有教變數變換08/28 13:50
32F推: 課綱裡面沒有變數變換08/28 13:53
2F推: 各自的標準差可以得到x平方和的平均 y平方和的平均08/24 12:36
3F→: 由相加之後的標準差可以得到(x+y)平方和的平均08/24 12:36
4F→: 後者減去兩個前者 就是兩倍的"xy和"的平均08/24 12:37
5F→: 就可以帶入相關係數公式了08/24 12:37
2F推: 好奇為何第二行到第三行還要特地改成sin?08/22 23:58