二次曲线过定点的弦的中点轨迹

The trajectory of mid-point of the chord of quadratic curve have a fixed point

在解析几何中,详细讨论了平行于某一非渐近方向的一族弦的中点轨迹,有很多好的性质;通过对二次曲线过定点的弦的中点进行讨论,得出其轨迹方程,给出简单的应用,并得出几个较好的性质。

In the analytic geometry, a chord mid-point path parallel to a non asymptotic directions are discussed in detail, there are many good properties. This article carries on the discussion of the mid-point of the chord of quadratic curve have a fixed point, We get the trajectory equation ,gives some simple applications, and draw several good properties.