本题目来源于试卷: IB MAI HL Functions Topic 2.3 Properties of Functions，类别为 IB数学
[问答题]
Emily is training for a)wz7x df*x89ixa ,vv n triathlon and cycles at os53k*ju m.(qtjev8e a speed of 20 km/hr for 15 minutes followed by t hours running at a sp.(8 som3jeu5*e jvqkteed of 15 km/hr.
1.Show that a function to model her average speed S(t) is given by
S(t)= $\frac{20+60t}{1+4t}$.
2.Find $S^{−1}(t)$.
3.Hence find the time, t, if the average speed Emily travels at is 16 km/hr.
参考答案: 
本题详细解析:
暂无
| 
