There is a real joke.When some guys were tslking heartedly about "F4" in the living-room,
题目
There is a real joke.When some guys were tslking heartedly about "F4" in the living-room,
答案
There is a real joke.When some guyes were talking heatedly about"F4"in the living-room,the father came in the interrupted;"which is more powerful,F-4 or F-16?"The boys burst into laughter.Obviously,th...
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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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