数学中的转化与化归思想,是指在研究和解决有关数学问题时,采用某种手段将问题通过变换使之转化,进而得到解决的一种思想.常见的转化方式有:一般向特殊转化、复杂向简单转化、数形转化、构造转化、类比转化等.能否有意识地运用转化与化归思想解决问题,往往取决于能否发现待解问题中的转化点.下面,通过解析几何中一个问题,谈谈如 The conversion of mathematics and the conversion of thought, refers to the study and solve the mathematical problems, using some means to transform the problem to transform, and then be resolved by a common conversion methods are: the general to the special transformation , Complex to simple transformation, numerical transformation, structural transformation, analogy transformation, etc. Whether consciously using transformation and transformation can solve the problem often depends on whether the transformation point in the problem to be solved can be found.In the following, A question, talk like