→ suhorng :第一題取log如何 02/12 23:56
→ tokyo291 :取完log之後這樣得到的是logy,可是這樣要怎麼轉成y'? 02/13 00:12
→ a88241050 :log(y)的微分是? 02/13 00:16
→ tokyo291 :我懂了QQ題目作太多,基本的都沒想到... 02/13 00:17
→ suhorng :2.(1-x^(1/4))/(1-x)=1/(1+x^(1/4)+x^(2/4)+x^(3/4)) 02/13 00:27
→ suhorng :每一項都類似(只是我不清楚分子到底是怎樣) 02/13 00:28
→ Vulpix :3.問的是p要多少,那坨東西才收斂 02/13 00:37
→ tokyo291 :2.的分子部分就是1減x開根號n次 02/13 01:07
→ suhorng :所以是 1, 3, 4, 5, 6, ..., n-1, n 嗎? 跳過2? 02/13 01:11
→ tokyo291 :1 3 5 7 ...n 02/13 01:21
→ tokyo291 :指數的部分1 1/3 1/5 1/7 ... 1/n 02/13 01:22
→ tokyo291 :不好意思沒有表達得很好>< 02/13 01:23