| 二元函数极值定理的一种新证法 |
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| 引用本文： | 马云苓.二元函数极值定理的一种新证法[J].商丘师范学院学报,1996(Z1). |
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| 作者姓名： | 马云苓 |
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| 作者单位： | 商丘师专数学系 |
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| 摘 要： | 本文利用二元连续函数的局部保号性及正（负）定矩阵理论，给出了二元函数极值充分条件定理的一种新证法．
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| 关 键 词： | 稳定点，极值，局部保号性，正（负）定矩阵 |
A NEW PROOF OF THE EXTREME VALUE THEOREM ON FUNCTIONS OF TWO VARIABLES |
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| Ma Yun Ling.A NEW PROOF OF THE EXTREME VALUE THEOREM ON FUNCTIONS OF TWO VARIABLES[J].Journal of Shangqiu Teachers College,1996(Z1). |
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| Authors: | Ma Yun Ling |
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| Abstract: | In this paper, using the locally sign-preserving property of functions of two variables and the theory of positive(negative)definite matrices,we obtain a new proof for the theorem on the existence of extreme values of functions of two variables. |
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| Keywords: | Stationgry point Extreme value Locally sign-preserving property Positive (negative) definite matix |
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