<![CDATA[Função x^x não mostra o domínio correto]]>
https://help.geogebra.org/topic/fun%C3%A7%C3%A3o-xx-n%C3%A3o-mostra-o-dom%C3%ADnio-correto
Thu, 05 Dec 2019 14:32:58 +0000Tue, 03 Dec 2019 14:38:57 +0000Zend_Feed<![CDATA[Domain is something strange like R+ union Q- https://math.stackexchange.... (so what you see in GeoGebra is expected)]]>
https://help.geogebra.org/topic/fun%C3%A7%C3%A3o-xx-n%C3%A3o-mostra-o-dom%C3%ADnio-correto#comment-272026
Wed, 04 Dec 2019 10:15:09 +0000<![CDATA[what means x^x for x real. I know reals from Dedekind cuts for x>0 ie x=(A,B) , x^x=(Q\(B^B),B^B) I know that the Q field is isomorphic to a subset of R for + and * but I do not know a definition of x^x for x<0 x real I need first to define real, then operations in real then domain so I got real domain of x^x operation is R+ and for me x real and x<0 implies x^x does not exist NOTE: I know Cauchy's successions for defining real numbers, but x^x with x<0 is not possible also ¿am I wrong?]]>
https://help.geogebra.org/topic/fun%C3%A7%C3%A3o-xx-n%C3%A3o-mostra-o-dom%C3%ADnio-correto#comment-272074
Wed, 04 Dec 2019 22:03:37 +0000<![CDATA[(-2/3)^(-2/3) = cbrt(9/4)so OK for Q]]>
https://help.geogebra.org/topic/fun%C3%A7%C3%A3o-xx-n%C3%A3o-mostra-o-dom%C3%ADnio-correto#comment-272082
Wed, 04 Dec 2019 22:31:36 +0000<![CDATA[yes, in rational numbers]]>
https://help.geogebra.org/topic/fun%C3%A7%C3%A3o-xx-n%C3%A3o-mostra-o-dom%C3%ADnio-correto#comment-272134
Thu, 05 Dec 2019 14:32:58 +0000