319.sagews

4*56



5+7

12

5 + 8

13

7^45

107006904423598033356356300384937784807

2^3^4

2417851639229258349412352

sqrt(x)

\sqrt{ x }

x*x*x

{x}^{3}

x*x

{x}^{2}

x, y = var('x y')
W = plot3d(sin(pi*((x)^2+(y)^2))/2,(x,-1,1),(y,-1,1), frame=False, color='purple', opacity=0.8) 
S = sphere((0,0,0),size=0.3, color='red', aspect_ratio=[1,1,1])
show(W + S, figsize=8)