推 GeeDuTu :用sec代換 11/28 09:58
推 kusoayan :sinh 11/28 10:00
→ kusoayan :let u = 2z => (1/2)(17+u^2)^(1/2) 11/28 10:01
→ kusoayan :let u = 17sinhx 11/28 10:01
→ kusoayan :打錯 是根號17 11/28 10:02
→ zi6ru04zpgji:上面寫的還蠻詳細的 11/28 10:03
→ nourri :謝謝 11/28 10:11
推 craig100 :還真的有人記sinhx = =? 我一直覺得那冷門函數沒用. 11/29 00:14
推 endlesschaos:sinh很有用好嗎...... 11/29 08:27