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笔者在圆锥曲线的教学中发现学生常因疏忽出错,本文例举了一些常见的错误解法并进行错因剖析,希望能给同学们一些帮助.一、思维定势,产生错解例1已知动点P(x,y)到定点A(2.0)的距离与它到定直线l:x=8的
In the teaching of the conic section, the author finds that students are often mistaken for mistakes. This article exemplifies some common error solutions and analyzes the causes of mistakes. I hope to give some help to the students. I. Thinking and setting the wrong way. The distance from the fixed point P(x,y) to the fixed point A(2.0) and its fixed line l:x=8