圆锥曲线的定义不仅给出了圆锥曲线的意义,也是解题的重要工具·但是利用圆锥曲线的定义解题的方法比较灵活,往往是一看解答简洁漂亮,自己思考一筹莫展,其实能利用圆锥曲线的定义来解决的问题有它自己的特点,我们在解决问题时要对这样的特点加以提炼,悟出一定的道理,这样可以使 The definition of conic curve not only gives the meaning of conic curve but also is an important tool for solving the problem. However, the method of solving the problem by using conic curve is more flexible and often takes a look at the simple and beautiful solution. The definition of the problem to solve the problem has its own characteristics, we have to solve this problem to refine such characteristics, to understand some truth, so that you can make