Solving sqrt(i)=z, one or two solutions?

[brierand]

(10-27-2018 10:04 AM)Nigel (UK) Wrote:  ...
[*]People normally assume that \(\sqrt{z}\) is single-valued. As evidence for this assertion, I point to the universal appearance of \(\pm\) in front of the square root in the formula for the roots of a quadratic equation.
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Nigel (UK)

+1
See http://mathforum.org/library/drmath/view/53873.html (and the first link on that page) for the inconsistencies we get when assuming sqrt() returns more than one value...