| 摘要: |
| 函数的极值有重要的研究意义，求解方法多种多样；以三元函数一般的正定性判定方法为根据，得到了一种新的三元函数极值判定方法及证明过程，这种方法适用于条件和非条件极值的情况，并将这种判定方法推广到多元函数，得到一种多元函数极值判定方法. |
| 关键词: 极值 三元函数 多元函数 判定方法 |
| DOI： |
| 分类号: |
| 基金项目: |
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| The New Determination Method of Extremes of Multivariate Function |
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ZHAO Kun
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| Abstract: |
| The extremes of function have important research significance， and the solving method is varied. Based on the positive definiteness method of function with three variables， a new determination method about function with three variables and the proving process are got. This method also applies to conditions and unconditional extremes. Then this method is generalized to multivariate function， and a new determination method of extremes of multivariate function is got. |
| Key words: extremes function with three variables multivariate function determination method |
