| 二元函数可微的一个充分必要条件 |
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| 引用本文： | 曹玉升,徐肖丽. 二元函数可微的一个充分必要条件[J]. 浙江工商职业技术学院学报, 2009, 8(4): 46-48 |
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| 作者姓名： | 曹玉升 徐肖丽 |
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| 作者单位： | 商丘职业技术学院,河南,商丘,476000 |
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| 摘 要： | 常见的数学分析教材都仅给出二元函数可微的必要条件或充分条件，本文将给出并证明二元函数可微的一个充分必要条件。
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| 关 键 词： | 可微 偏导数 充分必要条件 |
A Necessary and Sufficient Condition on the Differentiability of Binary Functions |
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| CAO Yu-sheng,XU Xiao-li. A Necessary and Sufficient Condition on the Differentiability of Binary Functions[J]. Journal of Zhejiang Business Technology Institute, 2009, 8(4): 46-48 |
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| Authors: | CAO Yu-sheng XU Xiao-li |
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| Affiliation: | (Shangqiu Vocational Technology College, Shangqiu 476000, China) |
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| Abstract: | Necessary condition or sufficient condition on the differentiability of binary functions is only given in the common books of mathematical analysis, In this paper, We shall provide a necessary and sufficient condition on the differentiability of binary functionso |
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| Keywords: | differentiable partial necessary and sufficient condition |
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