The asymptotic properties of mean value in the mean value of bivariate functions are discussed, a solution is presented for related inverse problem.
讨论了二元函数中值定理中间值的渐近性质，给出了一个相关反问题的解。
Considering the single step processing technique of SPS, the thermal-electrical properties parameters of powder material were assumed as bivariate functions of temperature and the relative density.
考虑到放电等离子烧结的一步成形工艺，将粉末材料的热电性能参数假设为温度和密度的双变量函数。
This paper is mainly devoted to provide a supplementary analysis of extreme value problem of bivariate functions, in which a new sufficient condition and its concise proof when critical case is given.
本文利用二次型理论给出了二次函数最值的一个充分条件及求法 ，定义了二元齐次多项式的正定性 ，并基于定义给出了二元函数极值的一个充分条件。
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