二阶曲线切线交点的若干轨迹  

Several Loci of Intersection Point of Tangent Lines about Conic

作　　者：张复兴[1] 

机构地区：[1]邵阳学院数学系,湖南邵阳422000

出　　处：《邵阳学院学报（社会科学版）》2003年第5期19-21,共3页Journal of Shaoyang University:Social Science Edition

摘　　要：利用交比 ,在仿射平面上 ,对于二阶曲线 ,探求交成θ角的两切线的交点的轨迹方程 ,进而揭示其若干特殊情形 .In this paper, by cross ratio, on affine plane, as to conic, we probe the locus equation of intersection point of two tangent lines with intersectional angle θ, and reveal several special examples about it.

关 键 词：二阶曲线 切线 轨迹方程 笛卡儿直角坐标 仿射平面 正交变换 非迷向直线 

分 类 号：O187.1[理学—数学]