what are they used for?这句话的同义句
题目
what are they used for?这句话的同义句
答案
what are they used for?这句话的同义句为你回答如下(1) Why are they used ?(2) What is the purposed of using them ?(3) Why do we use them ?(4) What is the usage of employing them ?
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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