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作者 G41271 在 PTT [ Math ] 看板的留言(推文), 共675則
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[中學] 求圓面積
[ Math ]26 留言, 推噓總分: +9
作者: qazplm319 - 發表於 2020/04/17 16:40(4年前)
19FG41271: 答案要用反三角函數表示,只用pi無法表示,所以不可04/18 03:28
20FG41271: 能用國中方法算04/18 03:28
[微積] 重積分的範圍
[ Math ]2 留言, 推噓總分: +2
作者: david0426 - 發表於 2019/06/12 15:29(4年前)
2FG41271: 你得先了解θ是怎麼取的06/12 17:24
Re: [微積] 求極限 (ln(1+x^2))^2-(2ln(1+x))^2
[ Math ]6 留言, 推噓總分: +1
作者: sudiot - 發表於 2019/06/01 23:13(5年前)
1FG41271: 感謝哦,寫得很詳細,還特別修文改漏洞,我有看到你06/03 16:30
2FG41271: c改成δ. 因為週末比較忙, 所以現在才推文06/03 16:31
3FG41271: 我一開始直接展開,就變成要處理lnx/x^n的級數06/03 16:33
4FG41271: 雖然每項都趨於零,但有無窮項,無法證出加總等於零06/03 16:34
5FG41271: 均值定理避免了這問題, 感謝~06/03 16:35
6FG41271: 夾擠則是讓證明簡化了許多06/03 16:35
Re: [微積] 求極限 (ln(1+x^2))^2-(2ln(1+x))^2
[ Math ]2 留言, 推噓總分: +1
作者: Heaviside - 發表於 2019/06/01 09:09(5年前)
1FG41271: 真的可以這樣寫?06/01 12:07
[微積] 無窮數列
[ Math ]13 留言, 推噓總分: +5
作者: pupss92111 - 發表於 2019/05/31 16:56(5年前)
10FG41271: 因為那一串就等於1/x啊05/31 17:30
11FG41271: 你不覺得12和√的那一長串長得和1/x一樣嗎05/31 17:32
12FG41271: 同樣,6的那一串長得和上面的x一樣05/31 17:33
[微積] 求極限 (ln(1+x^2))^2-(2ln(1+x))^2
[ Math ]6 留言, 推噓總分: +2
作者: G41271 - 發表於 2019/05/30 13:44(5年前)
5FG41271: 一樓,證明不能直接寫無視吧XD05/31 13:13
6FG41271: 4樓的似乎可以,感謝~05/31 13:39
[其他] 請教一題工程數學問題
[ Math ]7 留言, 推噓總分: +4
作者: ttst0720 - 發表於 2019/05/29 16:17(5年前)
3FG41271: 分部積分: 令lnu=U, du=dV, 則∫UdV=UV-∫VdU05/29 16:27
4FG41271: 你要考工數的話, 我建議你把lnu的積分背下來05/29 16:29
[微積] 三角函數轉換
[ Math ]13 留言, 推噓總分: +3
作者: handsome0716 - 發表於 2019/05/27 00:12(5年前)
6FG41271: 我看圖明明就是寫sin05/27 15:10
7FG41271: 用和角公式解釋如何,殺雞用個牛刀05/27 15:11
[中學] 問一題模考題 圓
[ Math ]8 留言, 推噓總分: +2
作者: hero010188 - 發表於 2019/05/22 16:25(5年前)
1FG41271: 可用參數式硬解05/22 16:49
2FG41271: 或者向量展開:向量式PQ=PA+AB+BQ, 再兩邊平方05/22 17:38
[微積] 兩題級數收斂的判斷
[ Math ]8 留言, 推噓總分: +4
作者: sogood6108 - 發表於 2019/05/21 14:42(5年前)
7FG41271: 交錯基數審查法是?05/21 18:57