设定 a = b <> 0
Start with a = b
两边同乘以a: a * a = a * b --> a^2 = ab
两边同减b^2: a^2 - b^2 = ab - b^2
因式分解: (a + b)(a - b) == b(a-b)
两边同除以(a - b): a + b = b
Since a = b --> b + b = b or 2b = b
两边同除以b: 2 = 1 or 1 = 2
Proven.
设定 a = b <> 0
Start with a = b
两边同乘以a: a * a = a * b --> a^2 = ab
两边同减b^2: a^2 - b^2 = ab - b^2
因式分解: (a + b)(a - b) == b(a-b)
两边同除以(a - b): a + b = b
Since a = b --> b + b = b or 2b = b
两边同除以b: 2 = 1 or 1 = 2
Proven.
• 回复:给涮埽: 1 = 2 的更好证法 (by algebra) -arewethereyet- ♂ (38 bytes) () 02/17/2013 postreply 10:01:13
• So, you do know algebra! hahaha. ---Z--- ♂ (0 bytes) () 02/17/2013 postreply 10:06:03
• 证明了零不能做除数。真的,一直都以为这个定则霸道,不讲道理。 -羊冈- ♂ (0 bytes) () 02/17/2013 postreply 10:26:26
• 真想要除零的话也行,用罗比塔法则吧。 -π- ♂ (0 bytes) () 02/17/2013 postreply 21:13:33
• 我终于看明白点了,就是2B=B,不知道我理解对了没有? -NewBird- ♂ (0 bytes) () 02/17/2013 postreply 13:40:53
• a + b = b, 男人+女人,就为一个字------B. -铁塔哥- ♂ (0 bytes) () 02/17/2013 postreply 15:14:35
• 谢谢哈!这么贴心,俺学习了!没想到泡笑坛,一不小心,数学也提高了! -涮埽- ♀ (0 bytes) () 02/17/2013 postreply 16:05:05
• 从今笑坛也有了自己的理论,就是: -涮埽- ♀ (13 bytes) () 02/17/2013 postreply 16:07:34
• (a - b).eq.0 = .false. -陈皮- ♀ (0 bytes) () 02/17/2013 postreply 19:50:56