Mr.Smith and I work in the same office.He is the of us and work hard.So the boss of the factory
题目
Mr.Smith and I work in the same office.He is the of us and work hard.So the boss of the factory
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Mr Smith lives in the small village ,but he works in an office in a big city.He goes to work by train every morning and comes
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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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