What do you think of the phenomenon that
题目
What do you think of the phenomenon that
many athletes retired after they’ve made great achievement?
用英文阐明看法!
答案
Everyone has the right of choices.They do so because they have their own thought.Maybe they want to keep their honor.
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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