f(a,b)*f(c,d)=(ac-bd+ad+bc+4bd)^2 + 2(ac-bd)(ad+bc+4cd)

本帖于 2012-06-08 15:17:10 时间, 由版主 idiot94 编辑
回答: 有没有好办法?cma2012-03-10 19:31:33

=(F+G)^2 + 2(F + G) So, belong to A.

Sorry,I should do Q with pen later.

所有跟帖: 

f(a,b)*f(c,d)=(ac-bd+ad+bc+4bd)^2 + 2(ac-bd)(ad+bc+4bd) -jinjing- 给 jinjing 发送悄悄话 (19 bytes) () 03/14/2012 postreply 11:20:29

Too old to be right. 2(F+G) should be 2F*G. -jinjing- 给 jinjing 发送悄悄话 (0 bytes) () 03/14/2012 postreply 12:23:28

请您先登陆,再发跟帖!