On Thu, Aug 30, 2018 at 4:38 AM Stephen J. Turnbull < turnbull.stephen.fw@u.tsukuba.ac.jp> wrote:
Neil Girdhar writes:
There are a lot of misunderstandings in this thread. It's probably best to start by reading up on the roots of unity ( https://en.wikipedia.org/wiki/Root_of_unity).
That's not very polite, especially in context where somebody has already conceded that his "wrong" was over the top.
Speaking of courtesy, please stop clean up your addressee list. If you don't, GoogleGroups spams people who reply with "you're not a member".
same for the cube root I imagine if we had a cube root function Let's call that the principal cube root, which is always real for a real-valued input.
That doesn't seem to be how Wolfram sees it:
Right, I meant real root. It just happens the principal square root is the real root.