Yu Li often helps her mother do some housework 空格 空格Yu Li often 空格her mother 空格
题目
Yu Li often helps her mother do some housework 空格 空格Yu Li often 空格her mother 空格
对 do some housework提问
答案
What does Yu Li often help her mother do?
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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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