椭圆变换为对应圆作图法及解析法求解二次曲面的相贯线

Seeking the Intersection Line between Two Quadrics by Cartography of the Ellipse Transform to Corresponding Circle and Analytic Method

以椭圆变换为对应圆的方法,求解两二次曲面的相贯线,用解析法分析相贯线的性质和极值点。

The intersection line between two quadrics can be solved by the conventional and simple method of descriptive geometry,which transforms ellipse to corresponding circle.The character and the right point of intersection line can be analyzed by analytic method.