IB MAI HL Functions Topic 2.2 Applications of Functions (id: 2ba40268a)

本题目来源于试卷: IB MAI HL Functions Topic 2.2 Applications of Functions，类别为 IB数学

[填空题]
The Chicago Wheel, the world's first Ferris wheexh )xjxg3lw 9+f0*myr l, was d5jrmta9z,m-/8 pfcqbesigned and built in 1893 by an America mqrj/,zpcbf85tam9- n civil engineer, George W. G. Ferris Jr.
The height, in metres, above the ground of a passenger on the Chicago Wheel after
t minutes can be modelled by the function h(t)=38cos($\frac{π}{10}$​(t−10))+42.
1.Find the maximum height reached by a passenger on the Chicago Wheel. h =    m
2.Find the height above the ground of a passenger 1212 minutes after the ride has started. h ≈    m
3.Find the time, in minutes, it takes for the Chicago Wheel to complete one rotationrotation. t =    min
4.Given that passengers only complete one rotation on the Chicago Wheel, calculate how long they are more than 65 metres above the ground. $t_{more\,than}\,65_m$ ≈    min

参考答案:
空格1: 80±2%  空格2: 72.7±2%  空格3: 20±2%  空格4: 5.86±2% 


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