论文部分内容阅读
善于发现和挖掘日常教学过程中的问题,通过深入探讨和研究该问题就会有意想不到的的收获。椭圆是非常重要的一种圆锥曲线,直线和椭圆的位置关系更是历年高考命题的热点之一,尤其是直线与椭圆相交而生成的焦点弦相关问题更是考查的重点内容。下面是笔者在高三复习备考过程中讲评的一道与椭圆焦点弦有关的例题,由此题进行深入的探讨进而推导出的两个重要公式。
Good at discovering and mining daily teaching problems, through in-depth exploration and study of the problem there will be unexpected gains. Ellipse is a very important kind of conic curve. The relationship between the straight line and the ellipse is one of the hot topics of college entrance examination in the past years. Especially the focus of the string generated by the intersection of a straight line and an ellipse is the key content of the examination. The following is a review of the author in the third year of reviewing the process of commenting with the oval focus chord-related examples, from which to conduct in-depth discussion and then derived two important formulas.