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 Forum: Random Discussion   Topic: 2.9 recurring = 3 ! !!

reneviht
Posted: 21 Apr 2006, 1:59 pm 

Replies: 19
Views: 3,496
2.9¬ will always be 2.9¬ at no point is it 3. Which of the maths did you do this in? I assumed that we were talking about real numbers with the metric defined as d(x, y) = |x - y|, and that 2.9¬ was referring to the limit of the sequence a_0 = 2 a_n = 9/10^n + a_(n-1) (normally, I'd define it as a ...

 Forum: Getting to know each other   Topic: Customary Introductions

reneviht
 Post subject: Customary Introductions
Posted: 16 Apr 2006, 7:09 pm 

Replies: 4
Views: 915
Hello, all. Apparently I'm supposed to introduce myself. I'm reneviht. Normally, I avoid online communities because I don't have the endurance to keep up with them in a way that I'm satsified with, but I had to make an exception when I found this topic on your boards: http://www.wrongplanet.net/modu...

 Forum: Random Discussion   Topic: 2.9 recurring = 3 ! !!

reneviht
Posted: 16 Apr 2006, 7:05 pm 

Replies: 19
Views: 3,496
It could be they didn't notice the repeating decimal was supposed to be repeating. 0.9 repeating is most certainly a geometric series, and as long as you're working in decimal, it's equal to 1. Unless, of course, there's some funky metric that you're using... I've heard of metrics where the sequence...
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