利用各种“圆系方程”来解某些关于圆与圆,圆与直线相交或相切的解析几何习题,能简化解题步骤,快速而准确地得到结果.但是,教师往往没太注意给学生介绍这种方法的方式和时机,使很多学生对此方法只是一知半解,影响其正确和灵活运用.“百度知 Using a variety of ”circle equations“ to solve some analytic geometry problems about the intersection of circle and circle, circle and line, or tangent can simplify the problem-solving steps and get results quickly and accurately. However, teachers often do not Pay attention to the ways and the timing of introducing students to this method, so that many students only know little about this method, affecting its correct and flexible use. ”" Baidu