| 二次曲线局部与整体的关系 |
| |
| 引用本文： | 周建伟.二次曲线局部与整体的关系[J].大学数学,2013(5):113-117. |
| |
| 作者姓名： | 周建伟 |
| |
| 作者单位： | 苏州大学数学科学学院,江苏苏州215006 |
| |
| 摘 要： | 用射影几何知识讨论欧氏平面上二次曲线局部与整体的关系,讨论如何通过二次曲线的一些已知点与切线判断它的类型,作出它的对称轴,渐近线,焦点与准线.
|
| 关 键 词： | 二次曲线 对称轴 渐近线 焦点与准线 |
The Relation between Local and Global Properties of Conic |
| |
| Institution: | ZHOU J ian-wei (School of Mathematic Science, Suzhou University, Suzhou 215006, China) |
| |
| Abstract: | We study the relation between the local and global properties of conic. Show that we can determine the type of a quadric curve from some given points and tangent lines, and we can draw its principal axis, rectilinear asymptote, focus and directrix. |
| |
| Keywords: | conic principal axis rectilinear asymptote focus directrix |
| 本文献已被 维普 等数据库收录！ |
|
