20ÊÀ¼Í90Äê´ú£¬Æøºò±ä»¯×¨ÒµÎ¯Ô±»áÏòÕþ¸®ÌṩµÄÒ»Ï¸æÖ¸³ö£ºÈ«ÇòÆøºòÖðÄê±äůµÄÒ»¸öÖØÒªÒòËØÊÇÈËÀàÔÚÄÜÔ´ÀûÓÃÓëÉ­ÁÖ¿³·¥ÖÐʹCO2Ìå»ý·ÖÊýÔö¼Ó£®¾Ý²â£¬1990Äê¡¢1991Äê¡¢1992Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý·Ö±ð±È1989ÄêÔö¼ÓÁË1¸ö¿É±Èµ¥Î»¡¢3¸ö¿É±Èµ¥Î»¡¢6¸ö¿É±Èµ¥Î»£®ÈôÓÃÒ»¸öº¯ÊýÄ£Äâ20ÊÀ¼Í90Äê´úÖÐÿÄêCO2Ìå»ý·ÖÊýÔö¼ÓµÄ¿É±Èµ¥Î»ÊýyÓëÄê·ÝÔö¼ÓÊýx£¨¼´µ±ÄêÊýÓë1989µÄ²î£©µÄ¹Øϵ£¬Ä£Ä⺯Êý¿ÉÑ¡Óöþ´Îº¯Êýf£¨x£©=px2+qx+r£¨ÆäÖÐp£¬q£¬rΪ³£Êý£©»òº¯Êý g£¨x£©=abx+c£¨ÆäÖÐa£¬b£¬cΪ³£Êý£¬ÇÒb£¾0£¬b¡Ù1£©£¬
£¨1£©¸ù¾ÝÌâÖеÄÊý¾Ý£¬Çóf£¨x£©ºÍg£¨x£©µÄ½âÎöʽ£»
£¨2£©Èç¹û1994Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý±È1989ÄêÔö¼ÓÁË16¸ö¿É±Èµ¥Î»£¬ÇëÎÊÓÃÒÔÉÏÄĸöº¯Êý×÷ΪģÄ⺯Êý½ÏºÃ£¿²¢ËµÃ÷ÀíÓÉ£®
·ÖÎö£º£¨1£©ÀûÓöþ´Îº¯ÊýµÄ½âÎöʽΪf£¨x£©=px2+qx+r£¬ÓÉÒÑÖªµÃ³ö¹ØÓÚp£¬q£¬rµÄ·½³Ì×飬»ò¶Ôº¯Êýy=a•bx+cÓÉÒÑÖªµÃ³öa£¬b£¬cµÄ·½³Ì£¬µÃ³öÆ亯Êýʽ£¬´Ó¶øÇóµÃÆä½âÎöʽ£»
£¨2£©¸ù¾Ý£¨1£©£¬µÃ³öx=5ʱµÄº¯ÊýÖµ£¬×îºó¸ù¾Ý1994Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý±È1989ÄêÔö¼ÓÁË16¸ö¿É±Èµ¥Î»£¬¾ö¶¨Ñ¡ÔñÄÄÒ»¸öº¯Êýʽ½ÏºÃ£®
½â´ð£º½â£º£¨1£©¸ù¾ÝÌâÖеÄÊý¾Ý£¬µÃ£º
p+q+r=1
4p+2q+r=3
9p+3q+r=6
ºÍ
ab+c=1
ab2+c=3
ab3+c=6
£¬¡­£¨2·Ö£©
½âµÃ£º
p=
1
2
q=
1
2
r=0
ºÍ
a=
8
3
b=
3
2
c=-3
£¬
¡àf(x)=
1
2
x2+
1
2
x
£¬g(x)=
8
3
•(
3
2
)x-3
£®¡­£¨6·Ö£©
£¨2£©¡ßf£¨5£©=15£¬g£¨5£©=17.25£¬¡­£¨8·Ö£©f£¨5£©¸ü½Ó½üÓÚ16£¬
¡àÑ¡ÓÃf(x)=
1
2
x2+
1
2
x
×÷ΪģÄ⺯Êý½ÏºÃ¡­£¨10·Ö£©
µãÆÀ£º¿¼²éѧÉú»á¸ù¾Ýʵ¼ÊÎÊÌâÑ¡Ôñº¯ÊýÀàÐÍ£¬»áÓò»Í¬µÄ×Ô±äÁ¿È¡ÖµÇóº¯ÊýµÄ½âÎöʽ¼°±È½Ï³öÓÅÁÓ£®¿¼²éÁË´ý¶¨ÏµÊý·¨µÈÊýѧ·½·¨£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£ºÃûʦָµãѧ¸ßÖÐ¿Î³Ì Êýѧ ¸ß¶þ£¨Ï£© ÌâÐÍ£º044

ÔçÔÚ20ÊÀ¼Í60Äê´ú£¬ÓÉÓÚµ±Ê±¿Æ¼¼·¢Õ¹Ë®Æ½µÄÖÆÔ¼£¬Ä³ÆøÏǫ́ÌìÆøÔ¤±¨µÄ׼ȷÂÊΪ80%£¬½øÈë20ÊÀ¼Í90Äê´ú£¬Ëæ×ſƼ¼Ô¤²âÊֶεIJ»¶Ï¸üУ¬´ËÆøÏǫ́ÌìÆøÔ¤±¨µÄ׼ȷÂÊÌá¸ßÁË15¸ö°Ù·Öµã£®¼ÆËã(½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö)£º

(1)20ÊÀ¼Í60Äê´ú£¬5´ÎÌìÆøÔ¤±¨ÖÐÇ¡ÓÐ4´Î׼ȷµÄ¸ÅÂÊÊǶàÉÙ£»

(2)20ÊÀ¼Í90Äê´ú£¬5´ÎÌìÆøÔ¤±¨ÖÐÖÁÉÙÓÐ4´Î׼ȷµÄ¸ÅÂÊÊǶàÉÙ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º¸£½¨Ê¡ÏÃÃÅÒ»ÖÐ2011£­2012ѧÄê¸ßÒ»ÉÏѧÆÚÆÚÖÐÊýѧÊÔÌâ ÌâÐÍ£º044

20ÊÀ¼Í90Äê´ú£¬Æøºò±ä»¯×¨ÒµÎ¯Ô±»áÏòÕþ¸®ÌṩµÄÒ»Ï¸æÖ¸³ö£ºÈ«ÇòÆøºòÖðÄê±äůµÄÒ»¸öÖØÒªÒòËØÊÇÈËÀàÔÚÄÜÔ´ÀûÓÃÓëÉ­ÁÖ¿³·¥ÖÐʹCO2Ìå»ý·ÖÊýÔö¼Ó£®¾Ý²â£¬1990Äê¡¢1991Äê¡¢1992Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý·Ö±ð±È1989ÄêÔö¼ÓÁË1¸ö¿É±Èµ¥Î»¡¢3¸ö¿É±Èµ¥Î»¡¢6¸ö¿É±Èµ¥Î»£®ÈôÓÃÒ»¸öº¯ÊýÄ£Äâ20ÊÀ¼Í90Äê´úÖÐÿÄêCO2Ìå»ý·ÖÊýÔö¼ÓµÄ¿É±Èµ¥Î»ÊýyÓëÄê·ÝÔö¼ÓÊýx(¼´µ±ÄêÊýÓë1989µÄ²î)µÄ¹Øϵ£¬Ä£Ä⺯Êý¿ÉÑ¡Óöþ´Îº¯Êýf(x)£½px2£­1x£«r(ÆäÖÐp£¬q£¬rΪ³£Êý)»òº¯Êýg(x)£½abx£«c(ÆäÖÐa£¬b£¬cΪ³£Êý£¬ÇÒb£¾0£¬b¡Ù1)£¬(1)¸ù¾ÝÌâÖеÄÊý¾Ý£¬Çóf(x)ºÍg(x)µÄ½âÎöʽ£»(2)Èç¹û1994Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý±È1989ÄêÔö¼ÓÁË16¸ö¿É±Èµ¥Î»£¬ÇëÎÊÓÃÒÔÉÏÄĸöº¯Êý×÷ΪģÄ⺯Êý½ÏºÃ£¿²¢ËµÃ÷ÀíÓÉ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º2011-2012ѧÄ긣½¨Ê¡ÏÃÃÅÒ»ÖиßÒ»£¨ÉÏ£©ÆÚÖÐÊýѧÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

20ÊÀ¼Í90Äê´ú£¬Æøºò±ä»¯×¨ÒµÎ¯Ô±»áÏòÕþ¸®ÌṩµÄÒ»Ï¸æÖ¸³ö£ºÈ«ÇòÆøºòÖðÄê±äůµÄÒ»¸öÖØÒªÒòËØÊÇÈËÀàÔÚÄÜÔ´ÀûÓÃÓëÉ­ÁÖ¿³·¥ÖÐʹCO2Ìå»ý·ÖÊýÔö¼Ó£®¾Ý²â£¬1990Äê¡¢1991Äê¡¢1992Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý·Ö±ð±È1989ÄêÔö¼ÓÁË1¸ö¿É±Èµ¥Î»¡¢3¸ö¿É±Èµ¥Î»¡¢6¸ö¿É±Èµ¥Î»£®ÈôÓÃÒ»¸öº¯ÊýÄ£Äâ20ÊÀ¼Í90Äê´úÖÐÿÄêCO2Ìå»ý·ÖÊýÔö¼ÓµÄ¿É±Èµ¥Î»ÊýyÓëÄê·ÝÔö¼ÓÊýx£¨¼´µ±ÄêÊýÓë1989µÄ²î£©µÄ¹Øϵ£¬Ä£Ä⺯Êý¿ÉÑ¡Óöþ´Îº¯Êýf£¨x£©=px2+qx+r£¨ÆäÖÐp£¬q£¬rΪ³£Êý£©»òº¯Êý g£¨x£©=abx+c£¨ÆäÖÐa£¬b£¬cΪ³£Êý£¬ÇÒb£¾0£¬b¡Ù1£©£¬
£¨1£©¸ù¾ÝÌâÖеÄÊý¾Ý£¬Çóf£¨x£©ºÍg£¨x£©µÄ½âÎöʽ£»
£¨2£©Èç¹û1994Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý±È1989ÄêÔö¼ÓÁË16¸ö¿É±Èµ¥Î»£¬ÇëÎÊÓÃÒÔÉÏÄĸöº¯Êý×÷ΪģÄ⺯Êý½ÏºÃ£¿²¢ËµÃ÷ÀíÓÉ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º2014½ì¶È¸£½¨Ê¡¸ßÒ»µÚһѧÆÚÆÚÖÐÊýѧÊÔ¾í ÌâÐÍ£º½â´ðÌâ

20ÊÀ¼Í90Äê´ú£¬Æøºò±ä»¯×¨ÒµÎ¯Ô±»áÏòÕþ¸®ÌṩµÄÒ»Ï¸æÖ¸³ö£ºÈ«ÇòÆøºòÖðÄê±äůµÄÒ»¸öÖØÒªÒòËØÊÇÈËÀàÔÚÄÜÔ´ÀûÓÃÓëÉ­ÁÖ¿³·¥ÖÐʹCO2Ìå»ý·ÖÊýÔö¼Ó¡£¾Ý²â£¬1990Äê¡¢1991Äê¡¢1992Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý·Ö±ð±È1989ÄêÔö¼ÓÁË1¸ö¿É±Èµ¥Î»¡¢3¸ö¿É±Èµ¥Î»¡¢6¸ö¿É±Èµ¥Î»¡£ÈôÓÃÒ»¸öº¯ÊýÄ£Äâ20ÊÀ¼Í90Äê´úÖÐÿÄêCO2Ìå»ý·ÖÊýÔö¼ÓµÄ¿É±Èµ¥Î»ÊýÓëÄê·ÝÔö¼ÓÊý£¨¼´µ±ÄêÊýÓë1989µÄ²î£©µÄ¹Øϵ£¬Ä£Ä⺯Êý¿ÉÑ¡Óöþ´Îº¯Êý£¨ÆäÖÐΪ³£Êý£©»òº¯Êý £¨ÆäÖÐΪ³£Êý£¬ÇÒ£©£¬£¨1£©¸ù¾ÝÌâÖеÄÊý¾Ý£¬ÇóºÍµÄ½âÎöʽ£»£¨2£©Èç¹û1994Äê´óÆøÖеÄCO2Ìå»ý·ÖÊý±È1989ÄêÔö¼ÓÁË16¸ö¿É±Èµ¥Î»£¬ÇëÎÊÓÃÒÔÉÏÄĸöº¯Êý×÷ΪģÄ⺯Êý½ÏºÃ£¿²¢ËµÃ÷ÀíÓÉ¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸