1.How many brids can you see in the trees.I can see____brids in them.
题目
1.How many brids can you see in the trees.I can see____brids in them.
A.hundreds of B.five hundreds
C.hundred of D.five hundreds of
答案
A
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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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