There are some people in life rub shoulders with us,and did not have time to meet; met,but it was to
题目
There are some people in life rub shoulders with us,and did not have time to meet; met,but it was too late acquaintance; acquaintance,but too late to be familiar with; familiar,but still want to say goodbye.- For their own good points,because life is not long; the people around him better,because the next life may not be able to meet.
答案
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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