In the notebook under sage 4.2.1 this code seems to work OK, but under
sage 4.3 I get an error. Is there some syntax change I overlooked?
b = plot(sqrt(3)*x,(0,4))
f(z) = 4*log(z^3)-2*log(z^3-8)
g = lambda x,y: imag(f(x+y*I)) if y < sqrt(3)*x else float('nan')
a = contour_plot(g,(x,0,4),(y,0,4),fill=False,contours=30)
c = a + b
c
Thanks. This isn't imperative by any means. I was just going through
some old notebooks from last semester.
-Sterling
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