No matter how hard he tried, he just could not understand higher mathematics.
不论他如何努力，他就是无法弄懂高等数学。
The teaching of function of several variables is a difficult point in higher mathematics teaching.
求最值问题是中等数学永恒的话题，其中，多元函数求最值是难点。
The teaching of function of several variables is a difficult point in higher mathematics teaching.
求最值问题是中等数学永恒的话题，其中，多元函数求最值是难点。
应用推荐