What has a neck but no head,arms but no hand ,and a waist but no legs?
题目
What has a neck but no head,arms but no hand ,and a waist but no legs?
肯定不是被分解的尸体,我猜是树吧
答案
树
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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