正则平面参数曲线拐点的判别定理

摘要

基于参数局部凸曲线，给出正则平面参数曲线拐点的定义，得出正则平面参数曲线拐点的判别定理，并作为其应用．分析了几个实例．%Based on the locally convex parameter curves, the definition of inflexion about regular and planar parameter curves was given, the distinction theorem of inflexion about regular and planar parameter curves was deduced, and as its application, analyzed some examples.