请帮忙修改一下英语语法错误
题目
请帮忙修改一下英语语法错误
This thesis consists of three parts:the first one is the
introduction,this part is mainly introduces the development and significance of
the positive definite matrix.
答案
This thesis consists of three parts:the first one is the introduction,this part mainly introduces the development and significance of the positive definite matrix.
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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