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高级中学课本(试验修订本)数学第二册 (上)第101页介绍了椭圆的参数方程．在解答有些椭圆问题时,若能灵活地运用参数方程,则可收到事半功倍的效果．现举例说明,供同学们参考．
Senior High School Textbook (Test Revised) Mathematics Volume II (on) p. 101 describes the parametric equation of the ellipse. In solving some elliptic problems, if you can flexibly use the parametric equation, you can receive a multiplier effect. Now an example for the students reference.