Maybe not :-)
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送交者: MMILOVEYOU 于 October 18, 2002 16:01:46:
回答: 无甚不妥。 由 逍遥子 于 October 17, 2002 23:01:15:
-1 is not +1, -2 is not +2 but (-1)*(-2) = 2 which is same
as 1*2 = 2.
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- 哇!数学系的吧?厉害! - 逍遥子 (292 bytes) 23:39:00 10/18/02
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- 错! - 虫子 (100 bytes) 02:22:26 10/19/02
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