作者查詢 / kittor
作者 kittor 在 PTT [ Math ] 看板的留言(推文), 共324則
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2F推:10(sqrt30)-50秒嗎02/14 18:57
3F→:打錯了,分鐘02/14 18:57
1F→:分大人小孩男女就可以了,題目沒有直接說中國女02/10 19:59
4F推:男孩9,男人9,外女8,中女=14-6=8人,我算是偷用了02/10 20:19
5F→:答案02/10 20:19
6F→:打錯了,外女702/10 20:19
8F→:cos(x-1)dx=dsin(x-1),sin(x-1)dsin(x-1)=(1/2)dsin^02/05 21:16
9F→:2(x-1)=(1/2)d(1+sin^2(x-1)),再用變數變換02/05 21:17
3F→:用大D運算子配等比級數和取微分型式01/12 17:55
1F推:把一次微分項視為新的y(t)函數,就變成拉普拉斯轉換01/06 21:35
2F→:後的一階微分方程了01/06 21:35
3F推:從齊次下手好像也不行01/02 20:31
1F推:x=2e^0.5-1/e^0.5+1??12/19 11:53
3F推:第1題x*exp(x)=u12/10 12:37
6F→:sin(x+y)有消掉嗎11/12 16:44
8F→:-2[sin(x+y)+cos(x+y)]*e^(x-y)11/12 17:13
1F推:我有算一個答案是3/4011/09 12:25