[Bug]-Missing root in solving equation

[Helge Gabert]

Good point regarding -1 as a root of the original function!

Also, as shown in a previous post by Aries for the second function, The Ti returns -1 as a root with nSolve().

These functions have a range which is complex-valued for a part of their domain (if you accept the domain to include all of R). Sometimes, the (generally) complex solution resolves to a real number, depending on the occurrence of whole powers of i or -1, or a combination of \pi, or e in the context of Euler's identity. This happens for the second function at x=-1, and also at x=0 (although zero is, of course, not a root).

If you restrict the domain to not include any complex results in the range - - well, then you can ignore any real roots in that interval.