【摘 要】
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高级中学课本《平面解析几何》全一册 (必修 )第66页例 2如下 :已知一曲线是与两个定点 O(0 ,0 )、A(3,0 )距离的比为 12 的点的轨迹 ,求这个曲线的方程 ,并画出曲线 .这一例
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高级中学课本《平面解析几何》全一册 (必修 )第66页例 2如下 :已知一曲线是与两个定点 O(0 ,0 )、A(3,0 )距离的比为 12 的点的轨迹 ,求这个曲线的方程 ,并画出曲线 .这一例题 ,如能充分展示其深刻背景 ,纵横拓展 ,便可成为挖掘例题潜在智能价值 ,优化数学解题教学的典型材料
High School Textbook “Plane Analytical Geometry” Full Book (required) Page 66 Example 2 is as follows: A curve is known as a point with a ratio of 12 to two fixed points O(0,0) and A(3,0). The trajectory, to find the equation of this curve, and draw the curve. This example, if you can fully demonstrate its profound background, vertical and horizontal expansion, it can become a potential intelligent value of mining examples, optimization of mathematics problem solving teaching typical materials
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