·µ»Ø

×ß½ø²»¿ÆÑ§

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
µÚÁ½°ÙÕ һÌõȫеÄ΢Á£¹ìµÀ£¨5.6K£©(2/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
    Á½¿ÅéÙ×ÓÔÚײ»÷ºó£¬éÙ×ÓÖ­µÄ½¦ÉäÇøÓòºÍͼÏñÊÇû·¨Ô¤²âµÄ£¬ÍêÈ«Ëæ»ú¡£

    ÓÐЩéÙ×ÓÖ­½¦µÄλÖúõ㣬ÓÐЩ²îµã£¬ÓÐЩ¸üÊÇû·¨¹Û²â¡£

    Òò´ËÏëÒª¹Û²âµ½Ò»ÖÖÐÂÁ£×ÓÆäʵÊǷdz£À§Äѵģ¬ÄãÒªÄÃ×Å·Å´ó¾µÒ»¸ö¸öµØµãÕÒ¹ýÈ¥£¬ÍêÈ«ÊÇ¿´Á³¡£

    µ«Èç¹ûÄãÄÜÌáǰ֪µÀËüµÄ¹ìµÀÈ´ÓÖÊÇÁíÒ»»ØÊÂÁË¡£

    ±ÈÈçÎÒÃÇÖªµÀÓÐÒ»µÎéÙ×ÓÖ­»á½¦µ½ÅöײµØµã¶«ÄÏ·½37¶È½ÇÆßÃ×ÍâµÄµØÃæÉÏ£¬Õâ¸öµØÃæÔ­±¾ÓкܶàÎÛË®ÓÙÄ࣬½¦ÉäºóµÄéÙ×ÓÖ­»á»ìÔÓÔÚÒ»Æðû·¨¹Û²â¡£

    µ«ÎÒÃÇÒѾ­Ìáǰ֪µÀÁËËüµÄÔ˶¯¹ì¼££¬ÄÇôÍêÈ«¿ÉÒÔÊÂÏȾÍÔÚÄǶù·ÅÒ»¿é¸É¾»µÄ²ÉÑù°å¡£

    È»ºóË«ÊÖÀ뿪ÏÖ³¡£¬ÕÒ¸öÒÎ×Ó×öºÃ£¬°²¾²µÈËüËÍÉÏÃÅÀ´¾ÍÐС£

    ÑÛÏÂÓÐÁ˦«³¬×ÓµÄÐÅÏ¢£¬»¹ÓÐÁ˹«Ê½Ä£ÐÍ£¬ÍƵ¼¡°Âäµã¡±µÄ»·½ÚÒ²¾Í·Ç³£¼òµ¥ÁË¡£

    ÖÚËùÖÜÖª¡£

    n¼°Ë¥±äµÄͨ½â²¢²»¸´ÔÓ¡£

    ±ÈÈç´æÔÚË¥±äÁ´a¡úb¡úc¡úd¡­¡­£¬¸÷ÖÖºËËØµÄË¥±ä³£Êý¶ÔÓ¦·Ö±ðΪ¦Ë?¡¢¦Ë?¡¢¦Ë?¡¢¦Ë?¡­¡­¡£

    ¼ÙÉè³õʼt?ʱ¿ÌÖ»ÓÐa£¬ÔòÏÔÈ»£º)¡£

    ËæºóÐìÔÆÓÖдÏÂÁËÁíÒ»¸ö·½³Ì£º

    dn?/dt=¦Ë?n?-¦Ë?n?¡£

    ÕâÊÇbÔ­×ÓºËÊýµÄ±ä»¯Î¢·Ö·½³Ì¡£

    Çó½â¿ÉµÃn?=¦Ë?)-exp(-¦Ë?t)]/(¦Ë?-¦Ë?)¡£

    ËæºóÐìÔÆ±ßд±ßÄ

    ¡°cÔ­×Ӻ˵ı仯΢·Ö·½³ÌÊÇ£ºdn?/dt=¦Ë?n?-¦Ë?n?£¬¼´dn?/dt+¦Ë?n?=¦Ë?n?......¡±

    ¡°´úÈëÉÏÃæµÄn?£¬ËùÒÔ¾ÍÊÇn?=¦Ë?¦Ë?)/[(¦Ë?-¦Ë?)(¦Ë?-¦Ë?)+exp(-¦Ë?t)/[(¦Ë?-¦Ë?)(¦Ë?-¦Ë?)]+exp(-¦Ë?t)/[(¦Ë?-¦Ë?)(¦Ë?-¦Ë?)]£ý.....¡±

    Ð´ÍêÕâЩËû¶ÙÁ˶٣¬¼òµ¥ÑéËãÁËÒ»±é¡£

    È·¶¨Ã»ÓÐÎÊÌâºó£¬¼ÌÐøÐ´µÀ£º

    ¡°¿ÉÒÔ¶¨ÒåÒ»¸ö²ÎÊýh£¬Ê¹µÃh?=¦Ë?¦Ë?/[(¦Ë?-¦Ë?)(¦Ë?-¦Ë?)]£¬h?=¦Ë?¦Ë?/[(¦Ë?-¦Ë?)(¦Ë?-¦Ë?)]£¬h?=¦Ë?¦Ë?/[(¦Ë?-¦Ë?)(¦Ë?-¦Ë?)]......¡±

    ¡°Ôòn?¿É¼ò×÷£ºn?=)+h?exp(-¦Ë?t)+h?exp(-¦Ë?t)]¡£¡±

    Ð´ÍêÕâЩ¡£

    ÐìÔÆÔٴο´ÏòÆÁÄ»£¬½«¦«³¬×ӵIJÎÊý´úÈëÁ˽øÈ¥£º

    ¡°n=)+h?exp(-¦Ë?t)+¡­¡­h)]£¬hµÄ·Ö×Ó¾ÍÊǦ°¦Ëi£¬i=1¡«n-1£¬¼´·Ö×ÓÊǦË?¦Ë?¦Ë?¦Ë?.....¡±

    ¡°¦«³¬×ÓµÄË¥±äÖÜÆÚÊÇ17£¬ËùÒÔh?µÄ·Öĸ£¬¾ÍÊdzý¿ª¦«³¬×ÓǰһÖÖË¥±ä³£ÊýÓ릫³¬×ÓË¥±ä³£Êý¦Ë?µÄ²îµÄ»ý.....¡±

    °ë¸öСʱºó¡£

    ¼«¹âÈí¼þÉÏÏÖʵ³öÁËÒ»×éÊýÖµ¡£

    a a 0 1000£º

    1 904.8374

    2 818.7308

    3 740.8182

    .......

    7 496.5853

    8 449.329

    .....

    ÐìÔÆÃ»È¥¿´Ç°ÃæµÄÊý×Ö£¬·É¿ìµÄ½«Êó±êÏÂÀ­¡£

    ºÜ¿ì£¬Ëû±ãËø¶¨ÁËÆäÖеĵÚÊ®°ËÐУº

    18 165.2989¡£

    ÓÐÁËÕâÒ»×éÊý×Ö£¬½ÓÏÂÀ´µÄÎÊÌâ¾Í·Ç³£¼òµ¥ÁË¡£

    ÐìÔÆ½«ÕâÖÖÊý×ÖÊäÈëÁ˼«¹âÄ£ÐÍ£¬¹«Ê½Îª£º

    f£¨t£©£º=n£¨t£©//¦Ð£©¡£

    ÕâÀïµÄ¡°:=¡±ÊǶ¨Òå·ûºÅ£¬Ëü±íʾ½«ÓұߵĶ«Î÷¶¨Òå³É×ó±ßµÄ¶«Î÷¡£

    ÐìÔÆÏÖÔÚΪÕâ¸öf£¨t£©¸³ÓèÁËÒ»¸öÎïÀíÒâÒ壺

    Ä³¸öÔ­×ÓÔÚʱ¿ÌtÒÀÈ»´æ»î£¨Ã»ÓÐË¥±ä£©µÄ¸ÅÂÊ¡£

    n=)+h?exp(-¦Ë?t)+¡­¡­h)]Õâ¸ö¹«Ê½ÃèÊöÁ˵½Ê±¿Ìt»¹Ê£¶àÉÙÔ­×Ó£¬ÐìÔÆËù×÷µÄÊǽ«Ê£ÏµÄÔ­×ÓÊýÄ¿±ÈÉÏ×î³õµÄ×ÜÔ­×ÓÊý£¬Õâ¸öÁ¿×ÔÈ»¾ÍÊÇÔÚÄǶÑʣϵÄÔ­×ÓÖÐÄÜÕÒµ½ÐìÔÆÏëÒªµÄÄǸöµÄ¸ÅÂÊ¡£

    ·Ç³£¼òµ¥£¬Ò²·Ç³£ºÃÀí½â¡£

    ¼«¹âϵͳÁ¬½ÓµÄÊÇÖпÆÔºµÄ´Î¼¶·þÎñÆ÷£¬Ê¹ÓõÄÊÇÖпÆÔº³¬Ëã¡°Ò¹ÓµÄ²¿·ÖËãÁ¦¡£

    Òò´ËÖ»¹ýÁËÊ®¶à·ÖÖÓ¡£

    ËûÃæÇ°µÄÆÁÄ»ÉϱãÏÔʾ³öÁËÒ»¸ö½á¹û£º

    t=0£¬f=1¡£

    ¼û´ËÇéÐΡ£

    ÐìÔÆÍ«¿×¶Ùʱ΢΢һËõ¡£

    Õâ¸ö½á¹ûµÄÒâ˼¾ÍÊÇ......

    ÔÚÒ»¿ªÊ¼£¬y(xn+1)?y(xn)/h¡ÖfÕâ¸ö¹ìµÀÉÏ±ã´æÔÚÓÐÒ»¿ÅÁ£×Ó¡£

    Ö»ÊÇÔÚײ»÷¹ý³ÌÖÐËüÊÙÃüÖÕÖ¹»òÕßԾǨʧÄÜÁË£¬ËùÒÔ×îÖÕûÓб»²¶×½µ½¡£

    Ïëµ½ÕâÀï¡£

    ÐìÔÆ³ÁĬƬ¿Ì£¬×ß³öͼÊé¹Ý¡£

    ÄóöÊÖ»ú²¦Í¨ÁËÒ»¸öºÅÂë¡£

    Æ¬¿Ì¹ýºó¡£

    ÊÖ»ú½Óͨ£¬Ä³¸öÒ»Ìý¾ÍÖªµÀºÜ˧µÄÉùÒô´Ó¶ÔÍ·´«Á˹ýÀ´£º

    ¡°Î¹£¬Ð¡Ð죿¡±

    ¡°àÅ£¬ÊÇÎÒ£¬ÀÏʦÄúÕâ»á¶ùÓпÕÂ𣿡±

    ¡°¸Õ³öʵÑéÊÒ£¬É¶Ê¶ù£¿¡±

    ÐìÔÆ×éÖ¯ÁËÒ»·¬ÓïÑÔ£¬ËµµÀ£º

    ¡°ÀÏʦ£¬ÎÒ֮ǰ²»ÊÇÑо¿¹ýÒ»¸ö¦²³¬×ӵĿÎÌâÂð£¿Äú»¹¼ÇµÃ²»£¿¡±

    ¦²³¬×ÓÊÇĿǰ±È½ÏÖ÷Á÷µÄ³¬×ÓÖ®Ò»£¬ÊÙÃüΪ0.15ÄÉÃ룬ÖÊÁ¿±È³¬×ÓÖØÒ»µã¡£

    ÐìÔÆµÄ˶ʿ¿ÎÌâ±ãÊǦ²³¬×ÓÇ¿Ï໥×÷ÓÃϲúÉúµÄÄܼ¶²úÉúÓ°Ïì£¬Éæ¼°µ½ÁËһЩÁ¿×ÓÉ«¶¯Á¦Ñ§ÀíÂÛ·¶³ë¡£

    Òò´ËºÜ¿ì¡£

    µç»°¶ÔÍ·±ã´«À´ÁËÅËԺʿµÄ»Ø¸´£º

    ¡°Ã»´í£¬...Ŷ£¬ÎÒ¿´µ½Ä㿪Æô¼«¹âϵͳµÄ¼Ç¼ÁË£¬ÊÇÑо¿ÓгɹûÁËÂ𣿡±

    ¼«¹âÉæ¼°µ½ÁË·þÎñÆ÷µÄËãÁ¦ÎÊÌ⣬ÿ¸öѧÉúµÄ·Ý¶î¶¼ÊÇÓÐÏ޵ġ£

    ÅËԺʿ×÷ΪÐìÔÆµÄµ¼Ê¦£¬×ÔÈ»»áÊÕµ½Ïà¹ØÍ¨Öª£¬ÐìÔÆÒ²Ã»´òËãÂ÷×ÅËû£º

    ¡°ÊÇÕâÑùµÄ£¬ÀÏʦ£¬ÎÒÔÚÑо¿¦²³¬×ÓµÄʱºò£¬ºöÈ»·¢ÏÖÁËÒ»¸ö±È½ÏÌØÊâµÄÏàÐÔ¹ìµÀ£¬±¾Õ÷̬ÉϺͦ²³¬×ÓÓÐÐ©Çø±ð¡£¡±

    ¡°ºóÀ´ÎÒÓü«¹âϵͳ½øÐÐÁËÄ£Ä⣬·¢ÏÖËüÓëÕÔԺʿ²»¾Ãǰ¹Û²âµ½µÄ4685¦«³¬×ÓÓÐЩÀàËÆ¡£¡±

    ¡°ËùÒÔÎÒ¶ÔÕâ¸ö¹ìµÀ¹«Ê½½øÐÐÁËÓÅ»¯Ä£Ä⣬Óæ«³¬×ÓµÄË¥±ä²ÎÊýÈ¡´úÁ˦²³¬×Ó£¬×îºó·¢ÏÖ......¡±

    µç»°¶ÔÃæ¡£

    ÅËԺʿԭ±¾Õý²à×ÅÄÔ´ü£¬Óüç°òºÍ¶ú¶ä¼Ð×ÅÊÖ»ú£¬Ë«ÊÖÔòÔÚ²ð½âÒ»·ÝÇïµ¶ÓãÍâÂô¡£

    ²»¹ýÔÚÌýµ½ÐìÔÆµÚÒ»¾ä»°Ê±¡£

    Ëû±ãÒþÔ¼Òâʶµ½ÁËʲô£¬Í£ÏÂÁËÊÖÖе͝×÷¡£

    µ±ÐìÔÆ×îºóÒ»¾ä»°ËµÍ꣬ËûµÄ±íÇéÒÑÈ»ÄýÖØÁËÐí¶à£¬²¢ÇÒÍêÈ«¸úÉÏÁËÐìÔÆµÄ˼·£º

    ¡°Ð¡Ð죬×îºóµÄfÊǶàÉÙ£¿¡±

    ¡°t=0£¬f=1£¬»»¶øÑÔÖ®£¬ÔÚÄǸö¹ìµÀÉÏÓ¦¸Ã´æÔÚÓÐÒ»¿ÅÐÂÁ£×Ó¡£¡±

    ËµÍêÐìÔÆ¶ÙÁ˶٣¬²¹³äµÀ£º

    ¡°Ò»¿Å¿ÉÒÔ±»²¶×½¹Û²âµÄÐÂÁ£×Ó¡£¡±

    ........

    ×¢£º

    Íæ¸ö´óµÄ°É£¬¸÷λ¿ÉÒԲ²ÂÕâ¸öÐÂÁ£×Ó»áÑÜÉú³öʲô¼¼Êõ¡£

    Ä¿Ç°¿ÉÒÔ¹«¿ªµÄÐÅÏ¢ÈçÏ£º

    Õâ¸ö¼¼Êõ³ýÁ˦«³¬×ÓÓйØÍ⣬»¹Éæ¼°µ½ÁËdna´¢´æ¼¼ÊõºÍÈ˹¤ÖÇÄÜßäß䣬ÒÔ¼°½±Àø¹«Ê½ÖÐ×îºóÄDz¿·ÖµÄ±ÈÖµ¡££¨¹ìµÀ¹«Ê½Ö»ÊÇÈý²¿·ÖµÄµÚÒ»²¿·Ö£©

    ²Â¶ÔµÄ»°¼ÓÈýÊ®¸ü£¬ÎҾͲ»ÐÅÁË£¬Õâ¸öÒ²ÄÜÓÐÈËÄܲ¶ԣ¿
ÉÏÒ»Ò³ Ŀ¼ ÏÂÒ»ÕÂ