版选修1_1.ppt

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第2课时 椭圆方程及性质的应用,题型一 直线与椭圆的位置关系,例1,规律总结 直线与椭圆位置关系的判断方法,变式训练,题型二 弦长及中点弦问题,例2,变式训练,题型三 与椭圆有关的综合问题,例3,规律总结 解椭圆综合问题的常用技巧 椭圆是圆锥曲线中重要的一种曲线,它可以同其他章节知识结合考查,如不等式、三角函数以及平面向量等解决这类问题时要注意方程思想、函数思想及转化的思想,其中利用方程中根与系数的关系构造方程或函数是常用的技巧,对点训练,规范解答(四) 直线与椭圆的综合问题,典例,典题示例,典题试解,

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