| 关于多元函数的凹凸性 |
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| 引用本文： | 张文君,孙胜利.关于多元函数的凹凸性[J].商丘职业技术学院学报,2011(5):6-7. |
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| 作者姓名： | 张文君 孙胜利 |
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| 作者单位： | 商丘技师学院;商丘职业技术学院; |
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| 摘 要： | 将一元函数的凹凸性概念推广到多元函数，给出了多元函数为凸函数或严格凸函数的若干充要条件．
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| 关 键 词： | 凸区域 多元凸（凹）函数 充要条件 |
The Study of Convex and Concave Characteristics of Melti-element Function |
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| ZHANG Wen-jun,SUN Sheng-li.The Study of Convex and Concave Characteristics of Melti-element Function[J].Journal of Shangqiu Vocational and Technical College,2011(5):6-7. |
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| Authors: | ZHANG Wen-jun SUN Sheng-li |
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| Institution: | ZHANG Wen-jun1,SUN Sheng-li2(1.Shangqiu Technician College,Shangqiu 476000,China.2.Shangqiu Vocational and Technical College,China) |
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| Abstract: | The concept of convex and concave characteristics in one-element function was extended to multi-element function.Several causal and necessary conditions were provided,through which multi-element function will be convex function or will strictly be convex function. |
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| Keywords: | convex range multi-element convex(concave)function causal and necssary conditions |
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