倍可親

Is 1 bigger than 0.999... ?

作者:Mir  於 2009-3-5 00:23 發表於 最熱鬧的華人社交網路--貝殼村

通用分類:其它日誌|已有21評論

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Is 1 bigger than 0.9999..... ? This question is as important as Goldbach Conjecture.

If 1 is bigger than 0.999..., then what is their difference? Is it 0.1, or 0.01, or 0.001, or 0.0001?

No. The difference between 1 and 0.999.... is smaller than all of these. Acutually the difference is smaller than any positive numbers. That is, 1 is not any bigger than 0.999... by any difference you can think of. Therefore, 1 is not any bigger than 0.999....

Since 1 is not smaller  than 0.9999... either, 1 then equals 0.999....

That is not the direct prove that 1 equals 0.999... though, here is the prove.

Let                            0.9999.…..= X                   (1)

Multiple both sides by 10:     9.9999.….= 10X                  (2)

(2) - (1):                             9 = 9X

Hence                                  X = 1

Therefore                      0.99999.…… = 1

This is Mir Conjecture.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the permission of the copyright holder, who is Mir.
 
PS: I can not type Chinese but love to read Chinese, the only language I can really understand. So please, no English, if you do not have to.
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發表評論 評論 (21 個評論)

回復 marnifan 2009-3-5 05:02
0.9999999999999999..............................還是不等於 1.
回復 Mir 2009-3-5 05:21
marnifan: 0.9999999999999999..............................還是不等於 1.
Do you belive my logic though?
I proved something which is obviously wrong. Pure skill.
回復 marnifan 2009-3-5 05:29
Mir: Do you belive my logic though?
I proved something which is obviously wrong. Pure skill.
額, 咱邏輯不好, 沒懂.
回復 Mir 2009-3-5 05:39
marnifan: 額, 咱邏輯不好, 沒懂.
I though my article is stright forward. My failure. No wonder, no body said anything.
回復 Mir 2009-3-5 06:03
marnifan: 額, 咱邏輯不好, 沒懂.
You do not understand my logic, but understand my humor better than others. That is comforting. I do not understand why we can not really laugh off things.
回復 rtc4rtc 2009-3-7 03:07
悖論。小數點後有無窮多個9,所以(2)-(1)的算式得出9=9X的結果已經錯了,所以最後的結果是錯的。所以0.99999...<>1
回復 Mir 2009-3-7 03:12
rtc4rtc: 悖論。小數點後有無窮多個9,所以(2)-(1)的算式得出9=9X的結果已經錯了,所以最後的結果是錯的。所以0.99999...<>1
This is a real bite.

Infinite does not equal infinite, does it?
回復 練精化氣AAA 2009-3-7 03:20
回你這個帖 算是做了違背原則的一件事情  本來絕不在論壇來談科學

算了吧 就一回

1 和 0。9999。。。的比較  你的定義不清楚

如果 是在 有理數集合  1>0。999。。

如果是在實數集合 本來 1。0就可以表示為 0。9+0。09+0。009+0。0009+。。。。。

以上數列 的和最後是收斂 到 1。0的

具體證明  自己去看書
回復 Mir 2009-3-7 03:31
練精化氣AAA: 回你這個帖 算是做了違背原則的一件事情  本來絕不在論壇來談科學

算了吧 就一回

1 和 0。9999。。。的比較  你的定義不清楚

如果 是在 有理數集合
You are right.

It is simply the sum of infinite convergent geometric sequence.

It is not really a science paper here. I just want to make something interesting. You can do it again.
回復 rtc4rtc 2009-3-7 03:34
Mir: This is a real bite.

Infinite does not equal infinite, does it?
問題出在:9.999...-0.999...不可能得出9的結果。
回復 Mir 2009-3-7 03:40
rtc4rtc: 問題出在:9.999...-0.999...不可能得出9的結果。
That is right. It is  deceving. Obviously, not to you.
Thanks.
回復 rtc4rtc 2009-3-7 03:48
Mir: That is right. It is a deceving. Obviously, not to you.
Thanks.
多謝!
回復 已夜 2009-3-7 06:10
練精化氣AAA: 回你這個帖 算是做了違背原則的一件事情  本來絕不在論壇來談科學

算了吧 就一回

1 和 0。9999。。。的比較  你的定義不清楚

如果 是在 有理數集合
您老太厲害了!!!!!
回復 Mir 2009-3-7 06:27
已夜: 您老太厲害了!!!!!
Haha, I like this comment. Very scientific.
回復 已夜 2009-3-7 06:30
Mir: Haha, I like this comment. Very scientific.
恩呢~_~
回復 Mir 2009-3-7 06:37
已夜: 恩呢~_~
NNNNNNNNNNN~~~~~~~~~~
Time to wake up.
回復 newsound 2009-3-25 12:24
已夜: 您老太厲害了!!!!!
"您老太厲害了!!!!!"
拍得不夠響, 應該說「您老太太厲害了!!!!!」
回復 已夜 2009-3-25 15:21
newsound: "您老太厲害了!!!!!"
拍得不夠響, 應該說「您老太太厲害了!!!!!」
開玩笑的話,大家嘻嘻哈哈一過,吵架的話您別找我,不感興趣,沒時間。
回復 老糊塗 2009-4-8 10:36
因為
0.9999999.........=0.3333333................x3
0.3333333.........=1/3
所以
0.9999999.........=1/3 x 3 =1
回復 marnifan 2009-4-8 10:43
老糊塗: 因為
0.9999999.........=0.3333333................x3
0.3333333.........=1/3
所以
0.9999999.........=1/3 x 3 =1
腦筋急轉彎
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