ÌâÄ¿ÄÚÈÝ
ijÐËȤС×éÉè¼ÆÁËÒ»ÖÖ·¢µç×°Öã¬ÈçͼËùʾ£®Ôڴż«ÓëÔ²Öù×´Ìúо֮¼äÐγɵÄÁ½´Å³¡ÇøÓòµÄÔ²ÐĽǦÁ¾ùΪ
¦Ð£¬´Å³¡¾ùÑذ뾶·½Ïò£¬ÔÑÊýΪNµÄ¾ØÐÎÏßȦ£®abcdµÄ±ß³¤ab£½cd£½l¡¢bc£½ad£½2l.ÏßȦÒÔ½ÇËٶȦØÈÆÖÐÐÄÖáÔÈËÙת¶¯¡¢bcºÍad±ßͬʱ½øÈë´Å³¡£¬Ôڴų¡ÖУ¬Á½Ìõ±ßËù¾¹ý´¦µÄ´Å¸ÐӦǿ¶È´óС¾ùΪB¡¢·½ÏòʼÖÕÓëÁ½Ìõ±ßµÄÔ˶¯·½Ïò´¹Ö±£¬ÏßȦµÄ×ܵç×èΪr£¬Íâ½Óµç×èΪR.Çó£º

(1)ÏßȦÇиî´Å¸ÐÏßʱ£¬¸ÐÓ¦µç¶¯ÊƵĴóСEm£»
(2)ÏßȦÇиî´Å¸ÐÏßʱ£¬bc±ßËùÊÜ°²ÅàÁ¦µÄ´óСF£»
(3)Íâ½Óµç×èÉϵçÁ÷µÄÓÐЧֵI.


(1)ÏßȦÇиî´Å¸ÐÏßʱ£¬¸ÐÓ¦µç¶¯ÊƵĴóСEm£»
(2)ÏßȦÇиî´Å¸ÐÏßʱ£¬bc±ßËùÊÜ°²ÅàÁ¦µÄ´óСF£»
(3)Íâ½Óµç×èÉϵçÁ÷µÄÓÐЧֵI.
(1)Em£½2NBl2¦Ø¡¡(2)
(3)


ÊÔÌâ·ÖÎö£º(1)bc¡¢ad±ßµÄÔ˶¯ËÙ¶Èv£½¦Ø

(2)µçÁ÷


(3)Ò»¸öÖÜÆÚÄÚ£¬Í¨µçʱ¼ät£½


½âµÃ

µãÆÀ£º±¾ÌâÑо¿½»±äµçÁ÷µÄ²úÉú£¬ÊµÖÊÉÏÊǵç´Å¸ÐӦ֪ʶµÄ¾ßÌåÓ¦Óã¬ÊÇÓÒÊÖ¶¨Ôò¡¢·¨ÀµÚµç´Å¸ÐÓ¦¶¨ÂÉ¡¢°²ÅàÁ¦µÈ֪ʶµÄ×ÛºÏÓ¦Óã®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿