Surd

Surd[x,n]

gives the real-valued n^(th) root of x.

Details

  • Surd[x,n] returns the real-valued n^(th) root of real-valued x for odd n.
  • Surd[x,n] returns the principal n^(th) 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 surd, and moves between the fields.

Examples

open allclose all

Basic Examples  (2)

Surd gives a real-valued root:

In[1]:=
Click for copyable input
Out[1]=
In[1]:=
Click for copyable input
Out[1]=

Scope  (2)

Possible Issues  (1)

Neat Examples  (1)

See Also

Power  Sqrt  CubeRoot  Re

Introduced in 2012
(9.0)