[Æ´Òô]£ºchouxiang bijin
[ÍâÎÄ]£ºabstract approximation
ÔÚ³éÏó¿Õ¼äÖÐÑо¿±Æ½üÂÛÎÊÌâ¡£ÉèEÊǶÈÁ¿¿Õ¼ä£¬¦ÑÊÇEÉϵľàÀ룬¶ÔÓÚÈ·¶¨µÄÔªx¡ÊEºÍ¼¯GåE£¬Á¿ÎªxÓëGµÄ¾àÀ룬Ëü×ÔÈ»±êÖ¾×ÅG¶ÔxµÄ±Æ½ü³Ì¶È£¬³ÆΪG¶ÔxµÄ×î¼Ñ±Æ½üÖµ£»Ê¹µÈʽ ρ(x£¬y0)=EG(x)³ÉÁ¢µÄÔª y0¡ÊG³ÆΪ xÔÚ GÖеÄ×î¼Ñ±Æ½üÔª¡£¶Ô×î¼Ñ±Æ½üÖµEG(x)µÄ¹À¼ÆÒ»°ã½öÏÞÓÚ¾ßÌåµÄEºÍG¡£³éÏó±Æ½üÖ÷ÒªÑо¿ÏÂÃæÈý¸öÎÊÌ⣺
£¨1£©×î¼Ñ±Æ½üÔªy0µÄ´æÔÚÐÔ£»
£¨2£©Î©Ò»ÐÔ£»
£¨3£©¿Ì»×î¼Ñ±Æ½üÔªµÄÌØÕ÷¡£ÒÔÉÏ˵µÄÊǼ¯G¶ÔÔªxµÄ±Æ½ü£¬ÓÐʱ¸ø³öÒ»×å±»±Æ½üÔªF=£ûx£ý£¬ÄÇôÁ¿¾Í³ÉÁ˱êÖ¾±Æ½ü״̬µÄÌØÕ÷Á¿£¬³ÆEG(F)Ϊ¼¯G¶Ô¼¯FµÄ×î¼Ñ±Æ½üÖµ¡£ÓÐʱÐèÒªÔÚEµÄij×Ó¼¯×åÖÐÌôÑ¡×îºÃµÄGᣬҲ¼´ÕÒ³öGα0¡Êτʹ
×÷Ϊ±Æ½ü¼¯G£¬ÓÐʱΪEµÄÏßÐÔ×ӿռ䣬ÕâʱµÄ±Æ½ü³ÆΪÏßÐԱƽü£»ÓÐʱΪEµÄ͹×Ó¼¯£¬Ôò³ÆΪ͹±Æ½ü¡£³£¼ûµÄ͹±Æ½üÓÐ:ÓнçÏޱƽü£¬ÏµÊýÓнçÏ޵ĶàÏîʽ±Æ½ü£¬¾ßÓвåÖµÔ¼ÊøµÄ±Æ½ü£¬¹²Õý±Æ½ü£¬¹²µ¥µ÷±Æ½üµÈ¡£
·ºº¯·ÖÎöÊdzéÏó±Æ½üÑо¿µÄÖ÷Òª¹¤¾ß¡£ÀýÈ磬ÈôEΪÏßÐÔ¸³·¶¿Õ¼ä£¬GÊÇEµÄÏßÐÔ×ӿռ䣬ÄÇôÏÂÊöÃüÌ⣨¹þ¶÷¡ª°ÍÄúն¨ÀíµÄÍÆÂÛ£©¿ÉÓÃÓÚµ¼³ö×î¼Ñ±Æ½ü¹À¼ÆºÍ¿Ì»×î¼Ñ±Æ½üÔªµÄÌØÕ÷£ºÉèx¡ÊEŠ£¬ÄÇô¢Ù
ʽÖÐ BE*ΪE µÄ¹²éî¿Õ¼äE*Öеĵ¥Î»Çò£»
£¨2£©y0¡ÊGÊʺϡ¬y0-x¡¬=EG(x) µ±ÇÒ½öµ±´æÔÚ ƒ¡ÊEʹµÃ ¡¬ƒ¡¬=1£¬ƒ(y)=0£¨¶ÔËùÓÐy¡ÊG £©£¬ƒ(x-y0)=¡¬x-y0¡¬¡£
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)