gives real-valued the root of x.
- Surd[x, n] returns the real-valued root of real-valued x for odd n.
- Surd[x, n] returns the principal root for non-negative real-valued x and even n.
- For symbolic x in Surd[x, n], x is assumed to be real valued.
- Surd can be evaluated to arbitrary numerical precision.
- Surd automatically threads over lists.
- In StandardForm, Surd[x, n] formats as .
- can be entered as EscsurdEsc, and Ctrl+% moves between the fields.
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