ÌâÄ¿ÄÚÈÝ

ÒÑÖªº¯Êý£½x2£­4x£«a£«3£¬g(x)£½mx£«5£­2m£®

(¢ñ)Èô·½³Ìf(x)=0ÔÚ[£­1£¬1]ÉÏÓÐʵÊý¸ù£¬ÇóʵÊýaµÄÈ¡Öµ·¶Î§£»

(¢ò)µ±a£½0ʱ£¬Èô¶ÔÈÎÒâµÄx1¡Ê[1£¬4]£¬×Ü´æÔÚx2¡Ê[1£¬4]£¬Ê¹f(x1)£½g(x2)³ÉÁ¢£¬ÇóʵÊýmµÄÈ¡Öµ·¶Î§£»

(¢ó)Èôº¯Êýy£½f(x)£¨x¡Ê[t£¬4]£©µÄÖµÓòΪÇø¼äD£¬ÊÇ·ñ´æÔÚ³£Êýt£¬Ê¹Çø¼äDµÄ³¤¶ÈΪ7£­2t£¿Èô´æÔÚ£¬Çó³ötµÄÖµ£»Èô²»´æÔÚ£¬Çë˵Ã÷ÀíÓÉ£¨×¢£ºÇø¼ä[p£¬q]µÄ³¤¶ÈΪq£­p£©£®

 

¡¾´ð°¸¡¿

£¨1£©[£­8£¬0] £»£¨2£©£»£¨3£©t£½£­1»ò£®

¡¾½âÎö¡¿

ÊÔÌâ·ÖÎö£º£¨1£©º¯ÊýÔÚÇø¼ä[£­1£¬1]ÉÏ´æÔÚÁãµã£¬Ôò±ØÓУº£»£¨2£©È·¶¨ÖµÓò¹Øϵ¼´¼¯ºÏ¹Øϵ£¬Èô¶ÔÈÎÒâµÄx1¡Ê[1£¬4]£¬×Ü´æÔÚx2¡Ê[1£¬4]£¬Ê¹f(x1)£½g(x2)³ÉÁ¢£¬Ö»Ð躯Êýy£½f(x)µÄÖµÓòΪº¯Êýy£½g(x)µÄÖµÓòµÄ×Ó¼¯£®£¨3£©·ÖÀàÌÖÂÛ£¬È·¶¨¶þ´Îº¯ÊýµÄÖµÓò.

ÊÔÌâ½âÎö£º(¢ñ)£ºÒòΪº¯Êý£½x2£­4x£«a£«3µÄ¶Ô³ÆÖáÊÇx£½2£¬

ËùÒÔÔÚÇø¼ä[£­1£¬1]ÉÏÊǼõº¯Êý£¬      1·Ö

ÒòΪº¯ÊýÔÚÇø¼ä[£­1£¬1]ÉÏ´æÔÚÁãµã£¬Ôò±ØÓУº

¼´£¬        4·Ö

½âµÃ£¬¹ÊËùÇóʵÊýaµÄÈ¡Öµ·¶Î§Îª[£­8£¬0] £®      5·Ö

(¢ò)Èô¶ÔÈÎÒâµÄx1¡Ê[1£¬4]£¬×Ü´æÔÚx2¡Ê[1£¬4]£¬Ê¹f(x1)£½g(x2)³ÉÁ¢£¬Ö»Ð躯Êýy£½f(x)µÄÖµÓòΪº¯Êýy£½g(x)µÄÖµÓòµÄ×Ó¼¯£®

£½x2£­4x£«3£¬x¡Ê[1£¬4]µÄÖµÓòΪ[£­1£¬3]£¬      7·Ö

ÏÂÇóg(x)£½mx£«5£­2mµÄÖµÓò£®

¢Ùµ±m£½0ʱ£¬g(x)£½5£­2mΪ³£Êý£¬²»·ûºÏÌâÒâÉáÈ¥£»

¢Úµ±m£¾0ʱ£¬g(x)µÄÖµÓòΪ[5£­m£¬5£«2m]£¬ÒªÊ¹[£­1£¬3] [5£­m£¬5£«2m]£¬

Ð裬½âµÃm¡Ý6£»      9·Ö

¢Ûµ±m£¼0ʱ£¬g(x)µÄÖµÓòΪ[5£«2m£¬5£­m]£¬ÒªÊ¹[£­1£¬3] [5£«2m£¬5£­m]£¬

Ð裬½âµÃm¡Ü£­3£»

×ÛÉÏ£¬mµÄÈ¡Öµ·¶Î§Îª£®      10·Ö

(¢ó)ÓÉÌâÒâÖª£¬¿ÉµÃ£®

¢Ùµ±t¡Ü0ʱ£¬ÔÚÇø¼ä[t£¬4]ÉÏ£¬f(t)×î´ó£¬f(2)×îС£¬

ËùÒÔf(t)£­f(2)£½7£­2t¼´t2£­2t£­3£½0£¬½âµÃt£½£­1»òt£½3£¨ÉáÈ¥£©£»

¢Úµ±0£¼t¡Ü2ʱ£¬ÔÚÇø¼ä[t£¬4]ÉÏ£¬f(4)×î´ó£¬f(2)×îС£¬

ËùÒÔf(4)£­f(2)£½7£­2 t¼´4£½7£­2t£¬½âµÃt£½£»      12·Ö

¢Ûµ±2£¼t£¼Ê±£¬ÔÚÇø¼ä[t£¬4]ÉÏ£¬f(4)×î´ó£¬f(t)×îС£¬

ËùÒÔf(4)£­f(t)£½7£­2t¼´t2£­6t£«7£½0£¬½âµÃt£½£¨ÉáÈ¥£©£¬

×ÛÉÏËùÊö£¬´æÔÚ³£ÊýtÂú×ãÌâÒ⣬t£½£­1»ò£®          14·Ö

¿¼µã£º1¡¢¶þ´Îº¯ÊýÁãµã£»2¡¢·ÖÀàÌÖÂÛ˼Ïë.

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø