3550.sagews

circle((1,1), 2, rgbcolor=(0,0,1))

c = circle((0,0),1,rgbcolor=(0,1,0)) 
c.show(aspect_ratio=1) 
d = circle((0,0),1,rgbcolor=(0,1,0)) 
show(d, axes=false,aspect_ratio=1)

c = circle((2,2),3,rgbcolor=(1,0,0),fill=True) 
d = circle((0,0),2,rgbcolor=(0,0,1)) 
show (c+d,aspect_ratio=1 )

plot(x^3,(x,-2,4))

p1 = plot(exp(-1/2*x)*cos(2*pi*x),(x,0,6), rgbcolor=(1,0.75,0)) 
p2 = plot(exp(-1/2*x),(x,0,6),rgbcolor=(1,0.5,0)) 
show(p1+p2)