绘图的Maple代码:
with(plots):
L:=3:M:=1:N:=2: #向量#
x:=t->t^2:y:=t->t:z:=t->t^3: #准线的参数方程#
t1:=-1.2:t2:=1.2:s1:=-1:s2:=1:
zhunxian:=spacecurve([x(t),y(t),z(t)],t=t1-.2..t2+.2,color=red,thickness=5): #准线#
zhumian:=plot3d([x(t)+L*s,y(t)+M*s,z(t)+N*s],t=t1..t2,s=s1..s2,color=yellow): #柱面#
x_axis:=plot3d([u,0,0],u=-2..5,v=0..0.01,thickness=3): #x轴#
y_axis:=plot3d([0,u,0],u=-2..2,v=0..0.01,thickness=3): #y轴#
z_axis:=plot3d([0,0,u],u=-2..2,v=0..0.01,thickness=3): #z轴#
display(zhumian,zhunxian,x_axis,y_axis,z_axis,scaling=constrained);
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