the first school year has two semesters, from september of the first year through mid-january of the
题目
the first school year has two semesters, from september of the first year through mid-january of the second school year,students should do some practice about what they have learned. 什么意思3
答案
第一个学年有2个学期,从第一个学年的9月份到第二个学年的1月中旬.学生们应该练习他们所学的知识.
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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