lmen.m

我做了很久的

a=-0:0.1:5
b=-20:0.1:20
[a,b]=meshgrid(a,b)
c=a+i*b
c=(1-exp(-2*c))./c
c=abs(c)
mesh(a,b,c)
surf(a,b,c)
view(-60,20)
axis([-0,5,-20,20,0,2])
colormap(hsv)
rotate3d