Too old to be right. 2(F+G) should be 2F*G.

jinjing · 2012-03-14 12:23:28Z

Too old to be right. 2(F+G) should be 2F*G.简介

来源: jinjing 于 2012-03-14 12:23:28 [档案] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

本帖于 2012-06-08 15:17:10 时间, 由版主 idiot94 编辑

回答: f(a,b)*f(c,d)=(ac-bd+ad+bc+4bd)^2 + 2(ac-bd)(ad+bc+4cd) 由 jinjing 于 2012-03-14 11:16:15

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