Given n balls of radius r and the vector p (nx3) with all position (x,y,z) of the balls, return the symmetric matrix A (nxn) containing all distance between the centroid of all balls (diagonal terms should be all 0).
Two or more balls can overlap.
I think there is some rounding difference here... :-(
Back to basics 5 - Clipboard
Numbers with prime factors 2, 3 and 5.
Solving Quadratic Equations (Version 1)
subtract central cross
Find the function
Center of mass
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