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平面直角坐标系是初中数学的重要组成部分,也是一种重要的数学思维方法——数形转换的思维方法。众所周知,一个直角坐标系就是一个平面,在平面上的任意一点只能是唯一的一个坐标与它相对应。点可以构成线,再组合成面,可见直角坐标系把几何变得数字化了,所以直角坐标系是数学的一种重要应用工具。本文从直角坐标系的运用谈谈拓展方法,仅供各位同仁商讨和调研。
Plane Cartesian coordinate system is an important part of junior high school mathematics, but also an important mathematical thinking method - numerical conversion method of thinking. As we all know, a Cartesian coordinate system is a plane, at any point in the plane can only be a unique coordinate with it. Point can form a line, and then combined into a surface, showing that Cartesian coordinate system to digitize the geometry, so Cartesian coordinate system is an important tool for mathematics. This article from the Cartesian coordinate system to talk about expansion methods, for colleagues to discuss and research.