the little children used to be afraid of being alone at home 对划线部分提问
题目
the little children used to be afraid of being alone at home 对划线部分提问
答案
What did the little children use to be afraid of
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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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