17 replies to this topic

[EvilMathGod]

does 0.99999999999999999999999999999999999999999999999999999etc..= 1

[Silver_rose]

Yes

[Affray]

Well there is that.

[lord of the lols]

Yes. Proof: http://www.youtube.c...h?v=TINfzxSnnIE

[Benihime]

Almost?

[Bowsette]

Surely a "math god" wouldn't need to ask this question.

 

I CALL SHENANIGANS

[DeadChannel]

no, there is actually a thing in mathematics called repeating. http://en.wikipedia.org/wiki/0.999...

Essentially, the amount that each 9 adds to the number is exponentially smaller.

Similar to how you can half a number an infinite number of times.

Also similar to how pi != 4

[lord of the lols]

Pi does not equal four either. More proof: http://www.youtube.c...h?v=D2xYjiL8yyE  And if you meant Pi factorial equals four, just no.

[DeadChannel]

ummmmm, sorry if I lost you. I tend to use programmers notation for stuff.

 

In computer science, != means does not equal.

 

I put pi != 4

meaning pi does not equal four.

[lord of the lols]

Ah I thought you put the exclamation point meaning either factorial or just put it in the wrong place. I apologize.

[DeadChannel]

Naw, its fine. I need to remember to only use things like that on programming communities.

[lord of the lols]

Ya, I've tried learning how to program before, but I could never really get the hang of it.

[Champion of Cyrodiil]

This makes me think of derivatives in calculus.

 

Like how a plotted function can *almost* touch a tangent line when it is exclusive, but not quite... but it pretty much does, or else your brain will explode.  

 

 

I think the solid red dot means 'inclusive' so it actually does touch the line in that figure.

 

something like this may be more appropriate,
the domain:  { -infinite < x < 1 } where x is like your .9 repeating.
 

[seakingtheonixpected]

                                   _

yes because 1/9 and .9/9 equal the exact same thing.

[Champion of Cyrodiil]

                                   _

yes because 1/9 and .9/9 equal the exact same thing.

 

 

http://polymathemati..._sorry_it_.html

 

Apparently all of this boils down to the Axiom of Choice...

 

I have always generalized that if using "Real" numbers like in Algebra, it is okay to assume .999... = 1.

 

However, when you consider limits, like in calc... I believe you have to treat them different.

[Mister Sympa]

 Cyrodiil just summed up my thoughts. Practicality versus absolutely theory.

[Rejected]

Yes. Proof: http://www.youtube.c...h?v=TINfzxSnnIE

lol when I read the first message I thought of that too

[DeadChannel]

Yeah, I suppose it would be a question of theory vs practicality, but I would still say no.