Maple绘图小技巧1

图像是扩展想象力的有力手段。掌握一定绘图技巧，能帮助我们分析一些本质的关系。围绕问题探讨。这里不像教程那样一个一个去学习，因为已经过了那个阶段了。

二维图和三维图如何绘制到一起？

方法1

restart:with(plots):with(plottools):
s1:=implicitplot3d(z=x*y, x=-8..8,y=-8..8,z=-8..8,axes=normal,style=pointline ):
s2:=implicitplot(x^2+y^2=1, x=-8..8,y=-8..8,axes=normal,thickness=4):
f := transform(proc (x, y) options operator, arrow; [x, y, 0] end proc):
display({s1,f(s2)});

效果图

方法2

with(plots):
display([implicitplot3d(z = x*y, x = -8 .. 8, y = -8 .. 8, z = -8 .. 8,
axes = normal, style = line), spacecurve([cos(t), sin(t), 0], t = 0 .. 2*Pi,
view = [-8 .. 8, -8 .. 8, -8 .. 8], thickness = 4, color = navy)]);

参考链接
https://www.mapleprimes.com/questions/125217-How-Can-I-Plot-A-3D-And-A-2D-Graph-Together