Does .9999999... = 1?

http://www.youtube.com/watch?v=beueDtFFOw0

by billclerico • 17 years ago

1 4 17 years ago

byoung2• 17 years ago

If .333333... = 1/3, then .333333... x 3 = .999999... = 1/3 x 3 = 1, right

You know, there's a certain charm seeing someone give a lecture on math in MS paint. Of course, it helps that he has an english accent.

In regards to the topic, mathematically 0.9999... is less than 1. Practically 0.9999... = 1. Simple as that.

jibiki• 17 years ago

> mathematically 0.9999... is less than 1

http://en.wikipedia.org/wiki/0.999...

"In mathematics, the repeating decimal 0.999… ... denotes a real number equal to one. In other words, the notations 0.999… and 1 represent the same real number. This equality has long been accepted by professional mathematicians and taught in textbooks."

Note the "real number" part, of course. If you use a non-real number system, more power to you.

snarkyturtle2• 17 years ago

Whoops, should've researched that. I guess I was too preconditioned to the idea that mathematics isn't practical (thank you, Engineer vs. Mathematician jokes).

Does .9999999... = 1?

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