some of these are old people but some are people of tewnty to thirty who choose to live alone.翻译一下急啊
题目
some of these are old people but some are people of tewnty to thirty who choose to live alone.翻译一下急啊啊啊啊啊啊啊啊啊
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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