笔者担任高三理科数学教学工作以来,发现学生对于圆锥曲线的考题始终存在着不可磨灭的恐惧,而庞大的计算量就是其中一只拦路虎。在近几年的浙江卷及浙江各校的高考模拟卷中,焦点弦面积最值问题与导数、基本不等式、三角函数等知识的结合更是屡见不鲜,其中的计算量尤为可观。所以笔者一直在想,能否寻找一种新的解题技巧,切实地帮助学生减少计算量,最终笔者发现了一种方法——转换坐标系 Since I was a professor of mathematics at the third year of high school teaching, I found that students always have an indelible fear of examinations of conic curves. The huge amount of calculation is one of the stumbling blockarts. In recent years, the Zhejiang and Zhejiang schools roll off the college entrance examination simulation volume, the focus string area most problems and derivatives, basic inequalities, trigonometric functions and other knowledge is more common, of which the amount of computation is particularly impressive. So I have been thinking, can find a new problem-solving skills, and effectively help students reduce the amount of computation, the author eventually found a way - conversion coordinates