This IMEI number seems to be correct,but we do not have any information on this specific handset.P
题目
This IMEI number seems to be correct,but we do not have any information on this specific handset.P
p lease add the missing information below.
我的三星手机串号是
352605059097071
答案
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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