ij¹«Ë¾Éú²úµÄAÐÍÉÌƷͨ¹ý×âÁÞ¹ñ̨½øÈëijÉ̳¡ÏúÊÛ.µÚÒ»Ä꣬É̳¡ÎªÎüÒý³§¼Ò£¬¾ö¶¨ÃâÊÕ¸ÃÄê¹ÜÀí·Ñ£¬Òò´Ë£¬¸ÃÄêAÐÍÉÌÆ·¶¨¼ÛΪÿ¼þ70Ôª£¬ÄêÏúÊÛÁ¿Îª11.8Íò¼þ.µÚ¶þÄ꣬É̳¡¿ªÊ¼¶Ô¸ÃÉÌÆ·Õ÷ÊÕ±ÈÂÊΪp%µÄ¹ÜÀí·Ñ£¨¼´ÏúÊÛ100ÔªÒªÕ÷ÊÕpÔª£©£¬ÓÚÊǸÃÉÌÆ·µÄ¶¨¼ÛÉÏÉýΪÿ¼þÔª£¬Ô¤¼ÆÄêÏúÊÛÁ¿½«¼õÉÙpÍò¼þ.

£¨1£©½«µÚ¶þÄêÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊյĹÜÀí·Ñy(ÍòÔª)±íʾ³ÉpµÄº¯Êý,²¢Ö¸³öÕâ¸öº¯ÊýµÄ¶¨ÒåÓò£»

£¨2£©ÒªÊ¹µÚ¶þÄêÉ̳¡ÔÚ´ËÏî¾­ÓªÖÐÊÕÈ¡µÄ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔª£¬ÔòÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊÕ¹ÜÀí·ÑµÄ±ÈÂÊp%µÄ·¶Î§ÊǶàÉÙ£¿

£¨3£©µÚ¶þÄ꣬É̳¡ÔÚËùÊÕ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔªµÄÇ°ÌáÏ£¬ÒªÈó§¼Ò»ñµÃ×î´óÏúÊÛ½ð¶î£¬ÔòpӦΪ¶àÉÙ£¿

½âÎö£º¸ù¾ÝÌâÄ¿·ÖÎö¿ÉÒԵõ½µÚ¶þÄê¸ÃÉÌÆ·ÄêÏúÊÛÁ¿Îª£¨11.8-p£©Íò¼þ£¬ÄêÏúÊÛÊÕÈë

Ϊ(11.8-p)ÍòÔª£¬ÔòÉ̳¡¸ÃÄê¶Ô¸ÃÉÌÆ·Õ÷ÊÕµÄ×ܹÜÀí·ÑΪ(11.8-p)p%£¨ÍòÔª£©£¬¿ÉÒԵõ½ËùÇóº¯Êý£¬ÀûÓú¯Êý¹ØϵʽµÄ×Ô±äÁ¿ºÍÒò±äÁ¿È¡Öµ·¶Î§±ã¿É½â¾öºóÃæµÄÎÊÌâ.

´ð°¸£º£¨1£©ÒÀÌâÒ⣬µÚ¶þÄê¸ÃÉÌÆ·ÄêÏúÊÛÁ¿Îª£¨11.8-p£©Íò¼þ£¬ÄêÏúÊÛÊÕÈëΪ(11.8-p)ÍòÔª£¬ÔòÉ̳¡¸ÃÄê¶Ô¸ÃÉÌÆ·Õ÷ÊÕµÄ×ܹÜÀí·ÑΪ(11.8-p)p%£¨ÍòÔª£©.

¹ÊËùÇóº¯ÊýΪ:y=(118-10p)p.ÓÉ 11.8-p£¾0¼°p£¾0µÃ¶¨ÒåÓòΪ0£¼p£¼.

£¨2£©ÓÉy¡Ý14£¬µÃ(118-10p)p¡Ý14.»¯¼òµÃp2-12p+20¡Ü0£¬¼´(p-2)(p-10)¡Ü0£¬

½âµÃ2¡Üp¡Ü10.¹Êµ±±ÈÂÊÔÚ£Û2%£¬10%£ÝÄÚʱ£¬É̳¡ÊÕÈ¡µÄ¹ÜÀí·Ñ½«²»ÉÙÓÚ14ÍòÔª.

£¨3£©µÚ¶þÄ꣬µ±É̳¡ÊÕÈ¡µÄ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòԪʱ£¬³§¼ÒµÄÏúÊÛÊÕÈëΪg(p)=(11.8-p)£¨2¡Üp¡Ü10£©.

¡ßg(p)=(11.8-p)=700(10-)Ϊ¼õº¯Êý£¬

¡àg(p)max=g(2)=700£¨ÍòÔª£©. 

¹Êµ±±ÈÂÊΪ2%ʱ£¬³§¼ÒÏúÊÛ½ð¶î×î´ó£¬ÇÒÉ̳¡ËùÊÕ¹ÜÀí·ÑÓÖ²»ÉÙÓÚ14ÍòÔª.

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ij¹«Ë¾Éú²úµÄAÐÍÉÌƷͨ¹ý×âÁÞ¹ñ̨½øÈëijÉ̳¡ÏúÊÛ£®µÚÒ»Ä꣬É̳¡ÎªÎüÒý³§¼Ò£¬¾ö¶¨ÃâÊÕ¸ÃÄê¹ÜÀí·Ñ£¬Òò´Ë£¬¸ÃÄêAÐÍÉÌÆ·¶¨¼ÛΪÿ¼þ70Ôª£¬ÄêÏúÊÛÁ¿Îª11.8Íò¼þ£®µÚ¶þÄ꣬É̳¡¿ªÊ¼¶Ô¸ÃÉÌÆ·Õ÷ÊÕ±ÈÂÊΪp%µÄ¹ÜÀí·Ñ£¨¼´ÏúÊÛ100ÔªÒªÕ÷ÊÕpÔª£©£¬ÓÚÊǸÃÉÌÆ·µÄ¶¨¼ÛÉÏÉýΪÿ¼þ
701-p%
Ôª£¬Ô¤¼ÆÄêÏúÊÛÁ¿½«¼õÉÙpÍò¼þ£®
£¨1£©½«µÚ¶þÄêÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊյĹÜÀí·Ñy£¨ÍòÔª£©±íʾ³ÉpµÄº¯Êý£¬²¢Ö¸³öÕâ¸öº¯ÊýµÄ¶¨ÒåÓò£»
£¨2£©ÒªÊ¹µÚ¶þÄêÉ̳¡ÔÚ´ËÏî¾­ÓªÖÐÊÕÈ¡µÄ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔª£¬ÔòÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊÕ¹ÜÀí·ÑµÄ±ÈÂÊp%µÄ·¶Î§ÊǶàÉÙ£¿
£¨3£©µÚ¶þÄ꣬É̳¡ÔÚËùÊÕ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔªµÄÇ°ÌáÏ£¬ÒªÈó§¼Ò»ñµÃ×î´óÏúÊÛ½ð¶î£¬ÔòpӦΪ¶àÉÙ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ij¹«Ë¾Éú²úµÄAÐÍÉÌƷͨ¹ý×âÁÞ¹ñ̨½øÈëijÉ̳¡ÏúÊÛ£®µÚÒ»Ä꣬É̳¡ÎªÎüÒý³§¼Ò£¬¾ö¶¨ÃâÊÕ¸ÃÄê¹ÜÀí·Ñ£¬Òò´Ë£¬¸ÃÄêAÐÍÉÌÆ·¶¨¼ÛΪÿ¼þ70Ôª£¬ÄêÏúÊÛÁ¿Îª12.7Íò¼þ£®µÚ¶þÄ꣬É̳¡¿ªÊ¼¶Ô¸ÃÉÌÆ·Õ÷ÊÕ±ÈÂÊΪm%µÄ¹ÜÀí·Ñ£¨¼´ÏúÊÛ100ÔªÒªÕ÷ÊÕmÔª£©£¬ÓÚÊǸÃÉÌƷÿ¼þµÄ¶¨¼ÛÌá¸ß
m1-0.01m
%
£¬Ô¤¼ÆÄêÏúÊÛÁ¿½«¼õÉÙmÍò¼þ£®
£¨¢ñ£©½«µÚ¶þÄêÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊյĹÜÀí·Ñy£¨ÍòÔª£©±íʾ³ÉmµÄº¯Êý£¬²¢Ö¸³öÕâ¸öº¯ÊýµÄ¶¨ÒåÓò£»
£¨¢ò£©ÒªÊ¹µÚ¶þÄêÉ̳¡ÔÚ´ËÏî¾­ÓªÖÐÊÕÈ¡µÄ¹ÜÀí·Ñ²»ÉÙÓÚ21ÍòÔª£¬ÔòÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊÕ¹ÜÀí·ÑµÄ±ÈÂÊm%µÄ·¶Î§ÊǶàÉÙ£¿
£¨¢ó£©µÚ¶þÄ꣬É̳¡ÔÚËùÊÕ¹ÜÀí·Ñ²»ÉÙÓÚ21ÍòÔªµÄÇ°ÌáÏ£¬Çóʹ³§¼Ò»ñµÃ×î´óÏúÊÛ½ð¶îʱµÄmµÄÖµ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

£¨ÄϾ©ÊÐ2002Äê¶þÄ££©Ä³¹«Ë¾Éú²úµÄAÐÍÉÌƷͨ¹ý×âÁÞ¹ñ̨½øÈëijÉ̳¡ÏúÊÛ.µÚÒ»Ä꣬ÉÌ ³¡ÎªÎüÒý³§¼Ò£¬¾ö¶¨ÃâÊÕ¸ÃÄê¹ÜÀí·Ñ£¬Òò´Ë£¬¸ÃÄêAÐÍÉÌÆ·¶¨¼ÛΪÿ¼þ70Ôª£¬ÏúÊÛÁ¿Îª 11.8Íò¼þ.µÚ¶þÄ꣬É̳¡¿ªÊ¼¶Ô¸ÃÉÌÆ·Õ÷ÊÕ±ÈÂÊΪp%µÄ¹ÜÀí·Ñ£¨¼´Ã¿ÏúÊÛ100ÔªÒªÕ÷ÊÕpÔª£©£¬ÓÚÊǸÃÉÌÆ·µÄ¶¨¼ÛÉÏÉýΪÿ¼þÔª£¬Ô¤¼ÆÄêÏúÊÛÁ¿½«¼õÉÙpÍò¼þ.

      £¨1£©½«µÚ¶þÄêÉ̳¡¶ÔÉÌÆ·Õ÷ÊյĹÜÀí·Ñy£¨ÍòÔª£©±íʾ³ÉpµÄº¯Êý£¬²¢Ö¸³öÕâ¸öº¯ÊýµÄ¶¨ÒåÓò£»

      £¨2£©ÒªÊ¹µÚ¶þÄêÉ̳¡ÔÚ´ËÏî¾­ÓªÖÐÊÕÈ¡µÄ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔª£¬ÔòÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊÕ¹ÜÀí·ÑµÄ±ÈÂÊp%µÄ·¶Î§ÊǶàÉÙ£¿

      £¨3£©µÚ¶þÄ꣬É̳¡ÔÚËùÊշѲ»ÉÙÓÚ14ÍòÔªµÄÇ°ÌáÏ£¬ÒªÈó§¼Ò»ñµÃ×î´óÏúÊÛ½ð¶î£¬Ôòp ӦΪ¶àÉÙ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ij¹«Ë¾Éú²úµÄAÐÍÉÌƷͨ¹ý×âÁÞ¹ñ̨½øÈëijÉ̳¡ÏúÊÛ£®µÚÒ»Ä꣬É̳¡ÎªÎüÒý³§¼Ò£¬¾ö¶¨ÃâÊÕ¸ÃÄê¹ÜÀí·Ñ£¬Òò´Ë£¬¸ÃÄêAÐÍÉÌÆ·¶¨¼ÛΪÿ¼þ70Ôª£¬ÄêÏúÊÛÁ¿Îª11.8Íò¼þ£®µÚ¶þÄ꣬É̳¡¿ªÊ¼¶Ô¸ÃÉÌÆ·Õ÷ÊÕ±ÈÂÊΪp£¥µÄ¹ÜÀí·Ñ(¼´ÏúÊÛ100ÔªÒªÕ÷ÊÕpÔª)£¬ÓÚÊǸÃÉÌÆ·µÄ¶¨¼ÛÉÏÉýΪÿ¼þÔª£¬Ô¤¼ÆÄêÏúÊÛÁ¿½«¼õÉÙpÍò¼þ.

(1) ½«µÚ¶þÄêÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊյĹÜÀí·Ñy(ÍòÔª)±íʾ³ÉpµÄº¯Êý£¬²¢Ö¸³öÕâ¸öº¯ÊýµÄ¶¨ÒåÓò£»

(2) ҪʹµÚ¶þÄêÉ̳¡ÔÚ´ËÏî¾­ÓªÖÐÊÕÈ¡µÄ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔª£¬ÔòÉ̳¡¶Ô¸ÃÉÌÆ·Õ÷ÊÕ¹ÜÀí·ÑµÄ±ÈÂÊp£¥µÄ·¶Î§ÊǶàÉÙ?

(3) µÚ¶þÄ꣬É̳¡ÔÚËùÊÕ¹ÜÀí·Ñ²»ÉÙÓÚ14ÍòÔªµÄÇ°ÌáÏ£¬ÒªÈó§¼Ò»ñµÃ×î´óÏúÊÛ½ð¶î£¬ÔòpӦΪ¶àÉÙ?  

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸