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构造法就是从问题的结构和特点出发 ,进行广泛联想 ,构造出一个与问题相关的数学模型 ,实现问题的转化 ,从而解决问题的方法 .构造圆锥曲线 ,是解、证不等式的一种有效的方法 ,可以做到数形结合 ,达到锻炼思维 ,培养创新能力的目的 .下面通过举例加以阐述 .1 构造圆例 1 解
The construction method starts from the structure and characteristics of the problem, makes a broad association, constructs a mathematical model related to the problem, realizes the transformation of the problem, and thus solves the problem. Constructing a conic curve is an effective solution to the problem and inequality. The method can achieve the purpose of combination of numbers and shapes, achieve exercise thinking, and cultivate innovation ability. The following explains by way of example. 1 Construction circle solution