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1引言超级画板是基于代数原理开发的.以数驭形、以形表数是其突出特点.与几何画板相比,超级画板中的变量比几何画板中的参数更易控制,其操作方式比几何画板的操作方式更加灵活,这使超级画板的作图变得异常方便快捷.我们以制作圆锥曲线为例加以说明.2问题熟悉动态几何软件的人都知道:现有的作圆锥曲线的方法没有用到它们的定义,而是用其他方法(如几何性质)实现
1 Introduction Super Sketchpad is based on the principle of algebra developed in order to Yu Yu-shaped to form the number of its outstanding features compared with the geometric Sketchpad, Super Sketchpad variables than the geometric parameters of the drawing board easier to control, and its mode of operation than geometry Drawing board operation more flexible, which make super drawing board drawing becomes very convenient and efficient .Take the conic curve as an example to illustrate .2 problem Familiar with the dynamic geometry software people know: the existing methods for the conic without Use their definition, but with other methods (such as geometric properties) to achieve