if you go to a fast food restaurant ,you will probably see a lot of teenager.Today ,many teenagers a
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if you go to a fast food restaurant ,you will probably see a lot of teenager.Today ,many teenagers are overweight,and reason of this is because of their bad eating habits.parents today also
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If you go to a fast food restaurant,you will probably see a lot of teenagers.Today,many teenagersare overweight,and some of this is because of their bad eating habits .Most teenagers love food witha l...
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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．
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