![](https://cache.ptt.cc/c/https/i.imgur.com/zl0tcVwl.jpg?e=1665078272&s=rMXLXaOZ99SF3u3zD2RMhw)
![](https://cache.ptt.cc/c/https/i.imgur.com/xlFygc8l.jpg?e=1665127669&s=j3MVPtiL9k4YOYD8XLfBNA)
※ 文章網址: https://www.ptt.cc/bbs/Examination/M.1436426588.A.07C.html
→ luz65106: http://i.imgur.com/zl0tcVw.jpg 07/09 17:06
→ luz65106: http://i.imgur.com/xlFygc8.jpg 07/09 17:07
推 Curry16: 4t = 20pi , t = 5pi 07/09 17:52
→ x014067: 謝謝,請問為何第二小題最後是零 07/09 19:48
→ luz65106: -4xsin2y+4xsin2y =0 07/09 19:56
→ x014067: 喔喔,謝謝,沒看清楚... 07/10 10:20