《十萬個爲什麽》數學本中有這樣一段證明：

設a和b是兩個相等的正數

a=b

那麽a2=ab

a2-b2=ab-b2

(a+b)(a-b)=b(a-b)

a+b=b

但a=b

即2b=b

所以2=1

問題出在哪兒？不仔細看，我也被擺了一道。嘿嘿。

P.T.P

This entry was posted by 貓小豆 on Wednesday, July 30th, 2008 at 19:18 and is filed under 貓子語類. (51 Views)