was the first day of our summer holiday.All of us were very happy.Why?Because we have one months
题目
was the first day of our summer holiday.All of us were very happy.Why?Because we have one months
答案
今天是暑假的第一天,我们都十分的高兴.为什么?因为我们有一个月的假期!
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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