Tom wanted to pay for his meal at the reataurant,but the waiter said,"No,you do not have to do that
题目
Tom wanted to pay for his meal at the reataurant,but the waiter said,"No,you do not have to do that
Today is mo publican is birthday,so all the food you had is on the house ." on the house
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本店奉送
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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