(07/05/2009, 09:21 PM)robo37 Wrote:(07/05/2009, 08:10 PM)bo198214 Wrote: What does it fit better than right-to-left tetration?
Do you mean why does it fit better than right-to-left tetration? As I said, it inherits more characteristics than the previous hyper operations.
No question was "what", i.e. give me some properties that left-to-right tetr. does satisfy which is not satisfied by right-to-left tetration, but which you would expect from a tetration.
As nuninho already wrote you can replace the roots by logarithms for the right-to-left tetration of negative values, then however tet(-2) is not defined, but this is not really a drawback.