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现行《普通高中课程标准实验教科书.数学》选修1—1和2—1(苏教版)圆锥曲线与方程一章的习题中,均有三道有关圆锥曲线的操作题,许多人对其感到棘手且不够重视.笔者通过对这三道题的反复研究,发现其深藏玄机、耐人寻味,颇具探究价值.1问题的提出操作题1准备一张圆形纸片,在圆内
The current “ordinary high school curriculum standard experimental textbook. Mathematics” elective 1-1 and 2-1 (Su Jianban) conic and equation chapter exercises, there are three questions about the conic operation, many people feel it difficult And not enough attention.The author through these three problems repeatedly research and found that its deep mystery, thought-provoking, quite explore the value of 1 questions proposed operation problem 1 prepare a round of paper, within the circle