In the 30-day month of April,for every three days it rained,there were two days it did
题目
In the 30-day month of April,for every three days it rained,there were two days it did
In the 30-day month of April,for every three days it rained,there were two days it did not rain.The number of days in April on which it rained was how much greater than the number of days on which it did not rain?
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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