中点问题是解析几何中最常见最重要的课题之一,教材中不仅有专门的研究,而且还是高考的热点.与曲线方程、韦达定理等知识的综合是中点问题中常见的题型,本文从另一个角度来探讨中点在解析几何中的巧妙应用.1中点定位,简化运算例1已知双曲线ax22-yb22=1的离心率为2,一条准线方程 The midpoint problem is one of the most common and most important topics in analytic geometry. There are not only special studies but also hot spots in the college entrance examination. The synthesis of knowledge such as curve equations and Weddah’s theorem is a common question in midpoint problems. This article from another point of view to explore the clever application of the midpoint in the analytical geometry. 1 midpoint positioning, simplified operation example 1 known eccentric hyperbola ax22-yb22 = 1 eccentricity of 2, a guideline equation