求最值问题是中等数学永恒的话题，其中，多元函数求最值是难点。
The teaching of function of several variables is a difficult point in higher mathematics teaching.
通常的多元样条函数要求在网线的每一点上，分片多项式的光滑性一致。
Usually, multivariate spline function is smooth on every point of net lines.
产量保险模型，并借助多元正态分布函数得到其显示表达式。
Moreover, this paper get the expression by multivariable normal distribution.
介绍了一种构造多元隶属函数的方法。
The determine method of membership function in fuzzy control;
介绍了一种构造多元隶属函数的方法。
The determine method of membership function in fuzzy control;
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