I have dream when I was a child,I know the aim is far and very diffculd ,So I always hard very mu
题目
I have dream when I was a child,I know the aim is far and very diffculd ,So I always hard very mu
答案
我小时候有个梦想,我知道目标很遥远也很困难,所以我非常努力
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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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