摘要
已知锥面的顶点及准线求锥面方程时,可将准线变形为含(x-a),(y-b),(z-c)因子的方程,设法配成齐次方程后加以整理可得到锥面方程,此方法比常规求法简便.
In order to extract cone equation when is known the vertex cone and directrix,the directrix can be changed into an equation containing factors(x-a),(y-b),(z-c).Then homogeneous equation is to be achieved and arranged.
出处
《石家庄职业技术学院学报》
2007年第2期69-70,共2页
Journal of Shijiazhuang College of Applied Technology
关键词
锥面
齐次方程
准线
母线
conical surface
homogeneous equation
directrix
generatrix
