Function File: nthroot (x, n)

Compute the n-th root of x, returning real results for real components of x. For example:

          nthroot (-1, 3)
          ⇒ -1
          (-1) ^ (1 / 3)
          ⇒ 0.50000 - 0.86603i

x must have all real entries. n must be a scalar. If n is an even integer and X has negative entries, an error is produced.

See also: realsqrt sqrt cbrt