论文部分内容阅读
本部分内容主要以解答题形式考查,往往是试卷的压轴题之一,一般以直线与圆锥曲线、圆与圆锥曲线为载体,考查弦长、定点、定值、最值、范围问题或探索性问题,试题难度较大,能力要求高,综合性强.圆锥曲线中的范围、最值问题圆锥曲线的最值与范围问题的常见解法:(1)几何法:若题目的条件和结论能明显体现几何特征和意义,则考虑利用图形性质来解决;(2)代数法:若题目的条件和结论能体现一种明确的函数关系,则可首先建立起目
This part is mainly to answer questions in the form of examination, is often one of the questions of the test paper, usually with straight lines and conics, circles and conics as the carrier, test the chord length, fixed point, fixed value, the most value, the scope of the problem or exploratory Problems, questions more difficult, high ability, comprehensive strong. Conic in the range, the most value conic the most value and scope of the problem common solution: (1) geometry: If the conditions and conclusions of the problem can be obvious Embody the geometric characteristics and significance, then consider the use of graphic properties to solve; (2) algebraic law: If the conditions and conclusions of the subject can reflect a clear functional relationship,