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Two simple proofs that .9999... =/= 1

Name: Anonymous 2011-09-10 16:20

Proof # 1:
Assume .9999... = 1
Then that means .999... = .999..8
Then that means .999...8 = .999...7
And so on until 1 = 0

However 1 =/= 0

So by proof of contradiction we have proved .9999... =/= 1
Proof # 2:

Assume .999... = 1
Multiply both sides by 10000...
Then we get 99999... = 100000...
However 10000... - 99999.... = 1
1 > 0
Therefore 1 =/= 0
Since the difference is not 0, we conclude .99999...=/= 1

Name: Anonymous 2011-09-10 16:24

Bad news. If 1 was equal to .99 recurring you would have had infinites.

Name: tdavis 2011-09-10 16:31

My Mom, when a child, asked if God could make a triangle a square.  I think God would use Gordian knot logic.

This is the God I know and love:

http://www.biblegateway.com/passage/?search=Numbers+11&version=NIV


God says...
Line: 8909

sardius, a topaz, and a carbuncle: this was the first row.

39:11 And the second row, an emerald, a sapphire, and a diamond.

39:12 And the third row, a ligure, an agate, and an amethyst.

39:13 And the fourth row, a beryl, an onyx, and a jasper: they were
inclosed in ouches of gold in their inclosings.

39:14 And the stones were according to the names of the children of
Israel, twelve, according to their names, like the engravings of a
signet, every one with his name, according to the twelve tribes.

Name: Anonymous 2011-09-10 17:16

x = .999...
10x = 9.999...
10x - x = 9.999... - .999...
9x = 9
x = 1

Then that means .999... = .999..8
Then that means .999...8 = .999...7

No.

And so on until 1 = 0
Even if your previous steps were right, you would never get there.

Then we get 99999... = 100000...
No, you get infinity. Don't say it, ``in Lisp'' guy.

IHBT

Name: Anonymous 2011-09-10 17:20

It's just that those who claim that 0.9999...= 1 use the ellipsis (...) to mean "limit toward +inf".

It's just an older than old math teacher trick employ to have their students think about limits and infinity.

Name: Anonymous 2011-09-10 17:35

>>1
Then that means
Hahaha, oh.  Non-mathematician are funny when they try to reason about mathematics.

Name: Anonymous 2011-09-10 18:05

Are you people reverse-trolling me by sounding as if you got trolled by OP?

Name: tdavis 2011-09-10 18:15

>>6
>>3

Did you comprehend God?  He made a 4x3 matrix suggesting a transform.

Biblical math is "forgive your brother 7 time 7 times" or "Abraham and his 12 sons" or "40 days" or "400 years".

Biblical math is awesome, once you catch the drift of it.

God says...
Line: 23146

18:17 And the five men that went to spy out the land went up, and came
in thither, and took the graven image, and the ephod, and the
teraphim, and the molten image: and the priest stood in the entering
of the gate with the six hundred men that were appointed with weapons
of war.

18:18 And these went into Micah's house, and fetched the carved image,
the ephod, and the teraphim, and the molten image. Then said the
priest unto them, What do ye?  18:19 And they said unto him, Hold thy
peace, lay thine hand upon thy mouth, and go with us, and be to us a
father and a priest: is it better for thee to be a priest unto the
house of one man, or that thou be a priest unto a tribe and a family
in Israel?  18:20 And the priest's heart was glad, and he took the
ephod, and the teraphim, and the graven image, and went in the midst
of the people.

Name: n3n7i 2011-09-10 18:34

the pleasure of increasing the mean ``quality of post'' WHERE NAME="n3n7i"

Name: Anonymous 2011-09-11 0:20

CALCULUS: THE PROG EDITION

Name: Anonymous 2011-09-11 7:29

dubz

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