All Numbers Are Equal

我来也

All Numbers Are Equal   
( l, g5 d8 g+ d$ @8 U! N: E% iTheorem: All numbers are equal. Proof: Choose arbitrary a and b, and let t = a + b. Then

a + b = t
4 }7 L' O+ N% ^(a + b)(a - b) = t(a - b)
a^2 - b^2 = ta - tb
a^2 - ta = b^2 - tb
a^2 - ta + (t^2)/4 = b^2 - tb + (t^2)/4
2 R2 s% N- w/ {; S" e. [( Q2 a4 u(a - t/2)^2 = (b - t/2)^2
% s! [% H& y: n2 ga - t/2 = b - t/2
a = b

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
4 i. |! D  f4 ~$ z# g8 i朋友    你算错了    在检查一遍吧

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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?

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高桥

原帖由 我来也 于 2006-6-13 21:47 发表

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