本文就解析几何题中常见的几类典型错误进行举例评析,以期引起同学们的注意.一、概念不清而致误例1一直线在x、y轴上的截距相等,且过点P(2,3),求该直线的方程.错解由于该直线在x、y轴上的截距相等,可设该直线方程为xa+ya=1,以点P(2,3)的坐标代入所设的直线方程中,得a=5,故所求 This article analyzes several common typical errors in analytical geometry problems to give students’ attention. First, the concept is unclear and misleading. Example 1 The intercepts of the straight line on the x and y axes are equal, and the point P is crossed. (2,3), find the equation of the line. The wrong solution Because the intercept of the line on the x, y axis is equal, you can set the line equation as xa+ya=1, to point P (2,3) coordinates Into the set of linear equations, get a = 5, so the request