光线跟踪程序的vc实现。可以绘制简单的三维图形，有阴影效果-The ray track program that achieved by VC,it can plot sipmle 3D graph with shadow effect

here is the matlab plot of the few equation in mupad.this is the matlab tool which is used for 2d - 3d plots. even it is very useful solving equation by simple commands like solve.

用于绘制三维函数的图像，用颜色表示函数值得大小-plot 3D graphic