Calculus Help~~~~~
2008-09-07 8:08 pm
A boat leaves a dock at 2:00 p.m. and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 3:00 p.m. At what time were the two boats closest together?
回答 (1)
2008-09-07 10:15 pm
✔ 最佳答案
As follows:圖片參考：http://hk.geocities.com/stevieg_1023/0difr1.gif
圖片參考：http://hk.geocities.com/stevieg_1023/0difr2.gif
收錄日期: 2021-04-22 00:44:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080907000051KK00804