Return the volume of a regular n-simplex with a unit side length.
Results are up to 4*eps precision.
Neither string operations nor interpolations are allowed!
Good problem, in the sense that it disallows many of the hacks used to cook a problem.
Most nonzero elements in row
Rounding off numbers to n decimals
Solving Quadratic Equations (Version 1)
Dots in a Diamond
Chebyshev polynomials of the 2nd Kind
Chebyshev polynomials of the 1st Kind
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