Èçͼ1£¬µãOΪֱÏßABÉÏÒ»µã£¬¹ýµãO×÷ÉäÏßOC£¬Ê¹¡ÏBOC£½120¡ã£®½«Ò»Ö±½ÇÈý½Ç°åµÄÖ±½Ç¶¥µã·ÅÔÚµãO´¦£¬Ò»±ßOMÔÚÉäÏßOBÉÏ£¬ÁíÒ»±ßONÔÚÖ±ÏßABµÄÏ·½£®

(1)½«Í¼1ÖеÄÈý½Ç°åÈƵãOÄæʱÕëÐýתÖÁͼ2£¬Ê¹Ò»±ßOMÔÚ¡ÏBOCµÄÄÚ²¿£¬ÇÒÇ¡ºÃƽ·Ö¡ÏBOC£¬ÎÊ£ºÖ±ÏßONÊÇ·ñƽ·Ö¡ÏAOC£¿Çë˵Ã÷ÀíÓÉ£»

(2)½«Í¼1ÖеÄÈý½Ç°åÈƵãO°´Ã¿Ãë6¡ãµÄËÙ¶ÈÑØÄæʱÕë·½ÏòÐýתһÖÜ£¬ÔÚÐýתµÄ¹ý³ÌÖУ¬µÚtÃëʱ£¬Ö±ÏßONÇ¡ºÃƽ·ÖÈñ½Ç¡ÏAOC£¬ÔòtµÄֵΪ¶àÉÙ£¿¡¡(Ö±½Óд³ö½á¹û)£»

(3)½«Í¼1ÖеÄÈý½Ç°åÈƵãO˳ʱÕëÐýתÖÁͼ3£¬Ê¹ONÔÚ¡ÏAOCµÄÄÚ²¿£¬Çë̽¾¿£º¡ÏAOMÓë¡ÏNOCÖ®¼äµÄÊýÁ¿¹Øϵ£¬²¢ËµÃ÷ÀíÓÉ£®

´ð°¸£º
½âÎö£º

¡¡¡¡(1)ƽ·Ö¡¡¡¡2·Ö

¡¡¡¡ÀíÓÉ(ÂÔ)¡¡¡¡4·Ö

¡¡¡¡t£½40»ò10¡¡¡¡8·Ö

¡¡¡¡¡ÏAOM£­¡ÏNOC£½300¡¡¡¡12·Ö


Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

27¡¢Èçͼ1£¬µãOΪֱÏßABÉÏÒ»µã£¬¹ýµãO×÷ÉäÏßOC£¬Ê¹¡ÏBOC=120¡ã£®½«Ò»Ö±½ÇÈý½Ç°åµÄÖ±½Ç¶¥µã·ÅÔÚµãO´¦£¬Ò»±ßOMÔÚÉäÏßOBÉÏ£¬ÁíÒ»±ßONÔÚÖ±ÏßABµÄÏ·½£®
£¨1£©½«Í¼1ÖеÄÈý½Ç°åÈƵãOÄæʱÕëÐýתÖÁͼ2£¬Ê¹Ò»±ßOMÔÚ¡ÏBOCµÄÄÚ²¿£¬ÇÒÇ¡ºÃƽ·Ö¡ÏBOC£®ÎÊ£º´ËʱֱÏßONÊÇ·ñƽ·Ö¡ÏAOC£¿Çë˵Ã÷ÀíÓÉ£®
£¨2£©½«Í¼1ÖеÄÈý½Ç°åÈƵãOÒÔÿÃë6¡ãµÄËÙ¶ÈÑØÄæʱÕë·½ÏòÐýתһÖÜ£¬ÔÚÐýתµÄ¹ý³ÌÖУ¬µÚtÃëʱ£¬Ö±ÏßONÇ¡ºÃƽ·ÖÈñ½Ç¡ÏAOC£¬ÔòtµÄֵΪ
10»ò40
£¨Ö±½Óд³ö½á¹û£©£®
£¨3£©½«Í¼1ÖеÄÈý½Ç°åÈƵãO˳ʱÕëÐýתÖÁͼ3£¬Ê¹ONÔÚ¡ÏAOCµÄÄÚ²¿£¬Çó¡ÏAOM-¡ÏNOCµÄ¶ÈÊý£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

Èçͼ1£¬Å×ÎïÏßy=ax2-4ax+b¾­¹ýµãA£¨1£¬0£©£¬ÓëxÖá½»ÓÚµãB£¬ÓëyÖá½»ÓÚµãC£¬ÇÒOB=OC£®
¾«Ó¢¼Ò½ÌÍø
£¨1£©ÇóÅ×ÎïÏߵĽâÎöʽ£»
£¨2£©½«¡÷OACÑØAC·­Õ۵õ½¡÷ACE£¬Ö±ÏßAE½»Å×ÎïÏßÓÚµãP£¬ÇóµãPµÄ×ø±ê£»
£¨3£©Èçͼ2£¬µãMΪֱÏßBCÉÏÒ»µã£¨²»ÓëB¡¢CÖغϣ©£¬Á¬OM£¬½«OMÈÆOµãÐýת90¡ã£¬µÃµ½Ï߶ÎON£¬ÊÇ·ñ´æÔÚÕâÑùµÄµãN£¬Ê¹µãNÇ¡ºÃÔÚÅ×ÎïÏßÉÏ£¿Èô´æÔÚ£¬Çó³öµãNµÄ×ø±ê£»Èô²»´æÔÚ£¬ËµÃ÷ÀíÓÉ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

£¨2013•ºþÖÝ£©Èçͼ¢Ù£¬OΪ×ø±êÔ­µã£¬µãBÔÚxÖáµÄÕý°ëÖáÉÏ£¬ËıßÐÎOACBÊÇƽÐÐËıßÐΣ¬sin¡ÏAOB=
4
5
£¬·´±ÈÀýº¯Êýy=
k
x
£¨k£¾0£©ÔÚµÚÒ»ÏóÏÞÄÚµÄͼÏó¾­¹ýµãA£¬ÓëBC½»ÓÚµãF£®
£¨1£©ÈôOA=10£¬Çó·´±ÈÀýº¯Êý½âÎöʽ£»
£¨2£©ÈôµãFΪBCµÄÖе㣬ÇÒ¡÷AOFµÄÃæ»ýS=12£¬ÇóOAµÄ³¤ºÍµãCµÄ×ø±ê£»
£¨3£©ÔÚ£¨2£©ÖеÄÌõ¼þÏ£¬¹ýµãF×÷EF¡ÎOB£¬½»OAÓÚµãE£¨Èçͼ¢Ú£©£¬µãPΪֱÏßEFÉϵÄÒ»¸ö¶¯µã£¬Á¬½ÓPA£¬PO£®ÊÇ·ñ´æÔÚÕâÑùµÄµãP£¬Ê¹ÒÔP¡¢O¡¢AΪ¶¥µãµÄÈý½ÇÐÎÊÇÖ±½ÇÈý½ÇÐΣ¿Èô´æÔÚ£¬ÇëÖ±½Óд³öËùÓеãPµÄ×ø±ê£»Èô²»´æÔÚ£¬Çë˵Ã÷ÀíÓÉ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

Èçͼ1£¬Å×ÎïÏßy=ax2+4x+b¾­¹ýµãA£¨1£¬0£©£¬B£¨3£¬0£©£¬ÓëyÖá½»ÓÚµãC£»
£¨1£©ÇóÅ×ÎïÏߵĽâÎöʽ£»
£¨2£©½«¡÷OACÑØAC·­Õ۵õ½¡÷ACE£¬Ö±ÏßAE½»Å×ÎïÏßÓÚµãP£¬ÇóµãPµÄ×ø±ê£»
£¨3£©Èçͼ2£¬µãMΪֱÏßBCÉÏÒ»µã£¨²»ÓëB¡¢CÖغϣ©£¬ÔÚÅ×ÎïÏßÉÏÊÇ·ñ´æÔÚÕâÑùµÄµãN£¬Ê¹ÈýµãO£¬M£¬N¹¹³ÉÒÔOΪֱ½Ç¶¥µãµÄµÈÑüÖ±½ÇÈý½ÇÐΣ¿Èô´æÔÚ£¬Çó³öµãNµÄ×ø±ê£»Èô²»´æÔÚ£¬ËµÃ÷ÀíÓÉ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

Èçͼ1£¬µãOΪֱÏßABÉÏÒ»µã£¬¹ýOµã×÷ÉäÏßOC£¬Ê¹¡ÏAOC£º¡ÏBOC=1£º2£¬½«Ò»Ö±½ÇÈý½Ç°åµÄÖ±½Ç¶¥µã·ÅÔÚµãO´¦£¬Ò»±ßOMÔÚÉäÏßOBÉÏ£¬ÁíÒ»±ßONÔÚÖ±ÏßABµÄÏ·½£®
£¨1£©½«Í¼1ÖеÄÈý½Ç°åÈƵãO°´ÄæʱÕë·½ÏòÐýתÖÁͼ2µÄλÖã¬Ê¹µÃONÂäÔÚÉäÏßOBÉÏ£¬´ËʱÈý½Ç°åÐýתµÄ½Ç¶ÈΪ
90
90
¶È£»
£¨2£©¼ÌÐø½«Í¼2ÖеÄÈý½Ç°åÈƵãO°´ÄæʱÕë·½ÏòÐýתÖÁͼ3µÄλÖã¬Ê¹µÃONÔÚ¡ÏAOCµÄÄÚ²¿£®ÊÔ̽¾¿¡ÏAOMÓë¡ÏNOCÖ®¼äÂú×ãʲôµÈÁ¿¹Øϵ£¬²¢ËµÃ÷ÀíÓÉ£»
£¨3£©ÔÚÉÏÊöÖ±½ÇÈý½Ç°å´Óͼ1Ðýתµ½Í¼3µÄλÖõĹý³ÌÖУ¬ÈôÈý½Ç°åÈƵãO°´15¡ãÿÃëµÄËÙ¶ÈÐýת£¬µ±Ö±½ÇÈý½Ç°åµÄÖ±½Ç±ßONËùÔÚÖ±ÏßÇ¡ºÃƽ·Ö¡ÏAOCʱ£¬Çó´ËʱÈý½Ç°åÈƵãOµÄÔ˶¯Ê±¼ätµÄÖµ£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸