摘要
用手工方法计算二元函数在原点处的两个极限,说明偏导数的存在性;用多种方法说明二元函数在原点的连续性;用可视化的方法验证手工计算的正确性,说明了大学生掌握MATLAB的实用性。
The two limits of binary function at the origin are calculated by manual method,which indicates the existence of partial derivatives.The continuity of binary functions at the origin is illustrated by many methods.Using visual method to verify the correctness of manual calculation,it shows the practicality of mastering MATLAB for college students.
作者
王培颖
卓海珊
黄思敏
Wang Peiying;Zhuo Haishan;Huang Simin(College of genetal education,Guangzhou Institute of Science and Technology,Guangzhou Guangdong 510540,China)
出处
《衡阳师范学院学报》
2021年第3期29-32,共4页
Journal of Hengyang Normal University
基金
校级教学成果奖培育项目(2019JXJPY020)。
关键词
二元函数
偏导数
连续性
极限
可视化
binary function
bias derivatives
continuity
limits
visualization
