Monday, 23 November 2015

number theory - Proofs for 00=1?




Everyone knows the following:
0x=0x0=1,xR




One morning, I wake up asking myself the question "What is 00, then?".

So, I did what any curious highschool student would do, I tried to figure it out using algebra
00=0xx=0x0x=00=undefined



...and I can't seem to not divide by zero every time I try.



But then, using the concept of limits, I can sort of say what it could be.



lim




Yeah, that doesn't provide me with much clarity either.
From my perspective there's a 50% chance that it is 1 and a 50% chance that it's 0.
\text{So, probabilistically it's } ^1/_2 \text{ !??}



Almost all calculators that I put it into gives me back Math Error.
But oddly enough Google says otherwise



Thanks to this Numberphile video, I realize that there can't be a proper definition for it.



But many still define it to be 1 for many more reasons. I wish to understand these reasons. I would like some proofs for this.



Hence, I seek proofs inclined (biased) to saying that 0^0 = 1




EDIT: I've changed the question slightly to avoid being a duplicate.
Thank you.


Answer



Perhaps the strongest reason why some people insist that \;0^0=1\; is that



$$\text{For}\;\;0

Yet \;x^x\; is undefined for lots of negative values in any neighborhood of zero...


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