对二次曲面教学中截痕法的探讨

Discussion On Quadric of the Teaching Method of Cut- off Mark

Mathematica软件具有强大的绘图、程序设计功能,在二次曲面的教学中利用软件的绘图和程序设计功能,直观描述二次曲面和平行于坐标面的平面相交所得的交线即截痕的动态变化过程,有利于增强教学内容的直观性,加强对二次曲面图形的了解和掌握.

Mathematica Software has a powerful drawing and program design functions, in teaching of the quadric ,we use mathematica software drawing and programming functions, to describe quadric and the coordinates of the surface of the plane from the intersection line, say, the cut-off marks,dynamic process of change,which will strengthen the teaching of the visual content and students＇understanding of the quadric graphics.