“圆锥曲线”是北师大版高二选修2-1第三章教学内容,是继必修2直线与方程的基础上又一章解析几何,是高考拥有13分大题和1～2个小题共计23分左右的重要内容。本部分知识涉及数形结合、分类讨论等数学思想,又可以与平面向量、三角函数、方程与函数等知识点构成综合题,同时又是考察学生运算能力与运 “Conic curve ” is the Beijing Normal University version of high school elective 2-1 Chapter III teaching content is following the compulsory 2 line and equation based on another chapter analytic geometry, college entrance examination has 13 points and 1 to 2 A total of about 23 points a little important content. This part of the knowledge involves the combination of mathematical form, classification and other mathematical thinking, but also with the plane vector, trigonometric functions, equations and functions and other knowledge points to form a comprehensive problem, but also examine the students' computing power and operation