All Numbers Are Equal

我来也

All Numbers Are Equal   
4 l8 P+ z: @2 ]  iTheorem: All numbers are equal. Proof: Choose arbitrary a and b, and let t = a + b. Then

: d) [, K: F7 {) ^; va + b = t
(a + b)(a - b) = t(a - b)
a^2 - b^2 = ta - tb
3 o! G# _+ T7 p1 b8 O, ?: {8 ?/ P& Ra^2 - ta = b^2 - tb
1 A3 D% m7 s0 \0 e! V4 l' s9 Sa^2 - ta + (t^2)/4 = b^2 - tb + (t^2)/4
7 `8 N# X* {9 J4 V6 M(a - t/2)^2 = (b - t/2)^2
) Y* Q0 k$ B7 V* t- ha - t/2 = b - t/2
7 V, _( Z* C4 n$ Fa = b
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" `& ^* w( `; `So all numbers are the same, and math is pointless.

老V

朋友    你算错了    在检查一遍吧

我来也

原帖由 老V 于 2006-6-13 11:05 发表
7 S$ D8 s' B  [朋友    你算错了    在检查一遍吧

高桥

does a^2=b^2 implies a=b? why not a=-b?

我来也

原帖由 高桥 于 2006-6-13 12:11 发表
does a^2=b^2 implies a=b? why not a=-b?

高桥

原帖由 我来也 于 2006-6-13 21:47 发表
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