3505.sagews

a = circle((1,1), 2)
a.show(aspect_ratio=1)

b=circle((0,0), 1, rgbcolor=(10,1,0))
b.show(aspect_ratio=1)
b.show(aspect_ratio=1, axes=false)

c1 = circle((0,0), 1, rgbcolor=(1,0,0), fill=true)
c2 = circle((0,1), 2, rgbcolor=(2,0,1))
show(c1+c2, aspect_ratio=1)

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

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