All Numbers Are Equal

我来也

All Numbers Are Equal   
/ G# z% F+ [6 E! ^Theorem: All numbers are equal. Proof: Choose arbitrary a and b, and let t = a + b. Then
) v6 r8 r2 k1 ]1 Q; j" ~
+ ^% g: }; b# u: Q  Ga + b = t
" O" p3 C7 c9 f8 ]+ }(a + b)(a - b) = t(a - b)
" _- h0 h$ i6 Z8 ia^2 - b^2 = ta - tb
4 u7 f6 Q" y- \2 e# |1 da^2 - ta = b^2 - tb
a^2 - ta + (t^2)/4 = b^2 - tb + (t^2)/4
(a - t/2)^2 = (b - t/2)^2
; l0 T, w$ V  J" oa - t/2 = b - t/2
  q* `5 W* d3 w% A) Y. F9 ]8 Ra = b
9 ^' a+ R3 V' e% J5 A8 H" ?  _3 h- @: Y
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
1 Z" T& ^' V7 p! l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