Once ,a young man was traveling on the train.He was causing a lot of trouble to the pasengers
题目
Once ,a young man was traveling on the train.He was causing a lot of trouble to the pasengers
arond him.
答案
有一次,一个年轻人正在火车上旅行.他给周围的乘客惹了很多麻烦事.
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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