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在平面解析几何中,有一类曲线上存在相异两点关于某直线对称,求参数取值范围的问题.求解的关键是如何构造出关于参数的不等式.本文通过一例,给出四种典型的思考途径,供学习参考.
In plane analytic geometry, there is a problem that there are two different points on the symmetry of a certain line on the curve, and the range of parameters is taken. The key to the solution is how to construct an inequality about parameters. This paper gives an example of four typical Ways to think for learning.