-f(1+0)+f(f(1))<=-[0*f(1)+f(f(1))]+f(f(1)). It is minus at the begining.
One more mistakes.
所有跟帖:
• Thx,...you said these Qs are too tough at beginning,...you under -jinjing- ♀ (19 bytes) () 08/06/2011 postreply 10:36:09
• I'm right, you want to make a joke, I know. -jinjing- ♀ (0 bytes) () 08/06/2011 postreply 11:04:53
• In case you did not get it. -wxcfan123- ♂ (82 bytes) () 08/06/2011 postreply 12:57:56
• Thx.Yes, you are right. It is easy for me,though I made mistakes -jinjing- ♀ (0 bytes) () 08/08/2011 postreply 16:27:42