Returns the principal Complex rth root of unity.
A complex scalar, e2πi/r
returns mag = 1; angle = 3.14159, 180.
returns mag = 1; angle = 0.91061, 52.17391.
Returns Complex number in polar form. Use cartesian(rthroot(r)) to see the root in Cartesian form. Use rthroot(r)^n to see the other rth roots of unity.
See POLYROOT to find the roots of a polynomial.