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解析几何的核心方法是用代数的方法研究几何问题,因此,解决解析几何问题必须重视对几何关系的深入研究,探究用何种代数形式能恰当表示题目中的几何关系,同时有利于代数运算,从而彤戍正确的解题策略。2015年高考数学北京卷理科第19题保持了北京卷背景熟悉、入口宽泛、解法多样的一贯风格,细细品读实感底蕴深厚,紧扣解析几何的思想精髓,堪称试题中的精品。解决解析几何问题的核心方法是用代数的方法研究图形的儿何性质,核心思想是数形结合。下面,笔者从核心思想方法出发探究本题第(Ⅱ)问的解题思路。
The core method of analytic geometry is to use algebraic methods to study the geometric problems. Therefore, to solve the analytic geometry problem, we must pay more attention to the further study on the geometric relation, and explore which algebraic form can properly represent the geometric relation in the question, Thus saving the correct problem solving strategy. 2015 college entrance examination math Beijing Volume 19 subjects to maintain the background of the Beijing volume familiar with a wide range of entrance, the solution has a variety of consistent style, the details of the deep sense of realism, analytic geometry closely linked to the essence of the essence of the problem can be called the boutique. The key method to solve the problem of analytic geometry is to use the method of algebra to study the nature of the figure. The core idea is the combination of number and form. The following, the author from the core ideas and methods to explore the problem (II) to ask questions.