I should say that is for a function of two variables to try to decide whether a given critical point is a minimum, a maximum or a saddle point.
但这种办法并不普遍，只能用于二元函数，来判断是极小值点、极大值点还是鞍点。
In this paper, a bundle method for the minimization of the convex nonsmooth function in point by point maximum is suggested.
研究了用束方法求解非光滑逐点最大凸函数的极小化问题。
With the features of a function's derivatives at a point, this paper discussed some problems of the function, such as monotonicity, local maximum, local minimum, inflection point, and asymptote.
本文利用函数某处的各阶导数的特点，以确定函数在该处的单调、极大值、极小值、拐点及浙近线等。
The monotone property of multivariate function proved that the maximum stress strength point exists on the inner surface of casing under the triaxial stress conditions.
通过实例计算，对比分析了用“三向应力圆”理论与其他几种理论计算的抗挤强度值。
The monotone property of multivariate function proved that the maximum stress strength point exists on the inner surface of casing under the triaxial stress conditions.
通过实例计算，对比分析了用“三向应力圆”理论与其他几种理论计算的抗挤强度值。
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