• Alias: sqrt. • Prefix operator with built-in evaluation rules. • x is by default interpreted as Sqrt[x]. • @, 2 or \@ yields a complete SqrtBox object. • \[Sqrt] is equivalent when evaluated, but will not draw a line on top of the quantity whose square root is being taken.
\[Sqrt]
sqrt
x is by default interpreted as Sqrt[x]. 
@
, 