you should ease up numerically on equality, so my solution works :)
The polar inertia is the sum of the squared distances of all points from the origin. https://en.wikipedia.org/wiki/Polar_moment_of_inertia
Duplicate a character
Generate one sample of uniform random numbers between -pi and +pi
Volume of this donut
Have you seen any Spindromes recently?
Vectorizing, too easy or too hard?
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