sqrt - square root function

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

sqrt - square root function

# SYNOPSIS

sqrt EXPR

sqrt

# DESCRIPTION

Return the square root of EXPR. If EXPR is omitted, returns square root of `$_`. Only works on non-negative operands, unless you've loaded the standard Math::Complex module.

        use Math::Complex;
        print sqrt(-2);    # prints 1.4142135623731i

sqrt - square root function