摘要
在二元函数微分学中,许多问题可以转化成一元函数的问题,即二元函数与一元函数的概念有着密切的联系.但二元函数的一些概念与一元函数相应的概念相比,涉及的问题更复杂,内容更丰富,结论也有差别.本文重点强调几个易混淆结论,并给出相应的反例.
In differential calculus of binary function, many problems can be transformed into a binary function problem, The concepts of Two function and Unary function are closely linked, but some concepts of binary function are more complex, more rich content, conclusion is different too. several confusing conclusions are analyzed, and the corresponding counterexample is given.
出处
《渤海大学学报（自然科学版）》
CAS
2013年第1期16-18,63,共4页
Journal of Bohai University:Natural Science Edition
关键词
极限
偏导数
连续
可微
反例
limit
partial derivative
continuous
differentiable
counterexample
