an automobile speedometer is configured to read speed proportional to the rotational speed of its wh
题目
an automobile speedometer is configured to read speed proportional to the rotational speed of its wheel.if larger wheels are used,will the speedometer reading be lower?why
答案
汽车速度表配置到车轮的转速成比例的速度.如果使用较大的车轮,将车速阅读会降低吗?为什么呢?
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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