.99999=1

**-darkknight-** · 11-26-2012, 08:49 AM

Is .99999999 with infinite 9s equal to 1?

Can someone get this straight?

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**PostmanPat** · 11-26-2012, 09:21 AM

In math, no, in practical computing terms, yes.

**-darkknight-** · 11-26-2012, 09:41 AM

But I thought if you had an infinite series it would equal to 1

And since 1/9 is .111111
.1111111x9=.9999999
9/9=1?

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**babydoll25** · 11-30-2012, 10:35 PM

No. It does not.

**Jerry Hildenbrand** · 11-30-2012, 11:02 PM

x = 0.999...
10x = 9.999...
10x-x = 9.999... - 0.999...
9x = 9
x = 1

**Kizzmocat** · 12-01-2012, 01:18 AM

Are you f.cking kidding me people! My brain hurts just thinking about you people thinking about this question! Damn

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**Johnly** · 12-01-2012, 01:19 AM

Originally Posted by -darkknight-

Is .99999999 with infinite 9s equal to 1?

Can someone get this straight?

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no....simply put....

**Zhara** · 12-01-2012, 01:39 AM

**Mooncatt** · 12-12-2012, 09:48 AM

Originally Posted by Jerry Hildenbrand

x = 0.999...
10x = 9.999...
10x-x = 9.999... - 0.999...
9x = 9
x = 1

Nope. You start out already establishing x=.999... The next step is a pointless example that doesn't change anything. The third is right, but the forth is where you messed up. I don't know how you got to that, but that line shouldn't even exist.

Simply worked out, 10x-x = 9. There is no 9x=9 or anything like that.