Square Root

Computes the square root of the input value. If x is negative, the square root is NaN unless x is complex. The connector pane displays the default data types for this polymorphic function.

x can be a scalar number, array or cluster of numbers, array of clusters of numbers, and so on.
sqrt(x) is a double-precision floating-point number if x is an integer. If x is less than 0, sqrt(x) is not a number (NaN), unless x is complex.