rate of change

2011-11-23 2:52 am

圖片參考:http://imgcld.yimg.com/8/n/HA00372412/o/701111220068713873404000.jpg

如題,求解。謝謝。 ~
更新1:

re no graphs given by the question

回答 (2)

2011-11-23 4:11 am
any graph(s) given?


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