There is a man in the middle of the road,but no one stops him why?
题目
There is a man in the middle of the road,but no one stops him why?
答案
There is a man in the middle of the road,but no one stops him why?
翻译:有个人在路中央,却没人阻止他,为什么?
回答:He's a policeman who's in charge of traffic.
翻译:她是指挥交通的交警.
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.
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