r(t)=(t^2+t)i+(t^3-4)j+(3-t)k
r(t) hits the xy-plane at the point (12,23,0). Find the angle on intersection of r(t) with the xy-plane at that point.
Angle=
一條很難的數學問題,求解答
2013-05-12 10:16 pm
回答 (1)
2013-05-13 12:29 am
✔ 最佳答案
------------------------------------------------------------------------------------------------圖片參考：http://imgcld.yimg.com/8/n/HA05107138/o/20130512162913.jpg
收錄日期: 2021-04-23 23:24:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130512000051KK00114