°²Çì¾ÅÒ»ÁùѧУ2011¡«2012ѧÄêµÚ¶þѧÆÚ
ÆßÄ꼶µÚÒ»´ÎÔ¿¼ÊýѧÊÔ¾í
µÚ¢ñ¾í
°à¼¶ ÐÕÃû ³É¼¨ £¨¿¼ÊÔʱ¼ä£º90·ÖÖÓ Âú·Ö£º100·Ö£©
Ò»¡¢Ñ¡ÔñÌ⣨ÿСÌâ3·Ö£¬¹²30·Ö£©
1¡¢ÏÂÁÐʽ×ÓÖУ¬ÎÞÒâÒåµÄÊÇ£¨ £©¡£ A¡¢?3 B¡¢?3 C¡¢2¡¢ÊµÊý?2£¬0.3£¬
??3?2 D¡¢3?1 31£¬2£¬?¦ÐÖУ¬ÎÞÀíÊýµÄ¸öÊýÊÇ£¨ £© 7A£®2 B£®3 C£®4 D£®5 3¡¢¹ÀËã33?1µÄÖµ £¨ £©
A£®ÔÚ2ºÍ3Ö®¼ä B£®ÔÚ3ºÍ4Ö®¼ä C£®ÔÚ4ºÍ5Ö®¼ä D£®ÔÚ5ºÍ6Ö®¼ä 4¡¢Èçͼ1£¬ÔÚÊýÖáÉÏËù±íʾµÄÊÇÄÄÒ»¸ö²»µÈʽµÄ½â¼¯ £¨ £©
x?31x??1 B£®??3
22C£®x?1??1 D£®?2x?4
x?73x?25¡¢²»µÈʽµÄ¸ºÕûÊý½âÓУº £¨ £© ?1?22A£®
A£®1 ¸ö B£® 2¸ö C£®3¸ö D£®4¸ö
?x?36¡¢Èç¹ûÒ»ÔªÒ»´Î²»µÈʽ×é?µÄ½â¼¯Îªx?3£®ÔòaµÄÈ¡Öµ·¶Î§ÊÇ( )
x?a?A£®a?3 B£®a¡Ý3 C£® a?3 D£® a¡Ü3 7¡¢ÈçÔÚʵÊý0£¬£3£¬?A£®?2£¬£ü£2£üÖУ¬×îСµÄÊÇ£¨ £©. 3 D£®£ü£2£ü
2 3 B£® £3 C£®0
8¡¢¶ÔÓÚʵÊýa¡¢b£¬¸ø³öÒÔÏÂÈý¸öÅжϣº
¢ÙÈôa?b£¬Ôò a?b£®
¢ÚÈôa?b£¬Ôò a?b£®
¢ÛÈôa??b£¬Ôò (?a)?b£®ÆäÖÐÕýÈ·µÄÅжϵĸöÊýÊÇ
A£®3 B£®2 C£®1 D£®0
?x£m£¼0£¬
9¡¢Èô¹ØÓÚxµÄ²»µÈʽ?ÕûÊý½â¹²ÓÐ2¸ö£¬ÔòmµÄÈ¡Öµ·¶Î§ÊÇ£¨ £©
?5£2x¡Ü1
A£®3£¼m£¼4
B£®3¡Üm£¼4
C£®3£¼m¡Ü4
D£®3¡Üm¡Ü4
10¡¢ Èçͼ£¬¾ØÐÎOABCµÄ±ßOA³¤Îª2 £¬±ßAB³¤Îª1£¬OAÔÚÊýÖáÉÏ£¬ÒÔÔµãOΪԲÐÄ£¬¶Ô½ÇÏßOBµÄ³¤Îª°ë¾¶»»¡£¬½»Õý°ëÖáÓÚÒ»µã£¬ÔòÕâ¸öµã±íʾµÄʵÊýÊÇ £¨ £©
22
£¨µÚ10Ìâͼ£©
£¨A£©2.5 £¨B£©22 £¨C£©3 £¨D£©5
¶þ¡¢Ìî¿ÕÌ⣨ÿСÌâ3·Ö£¬¹²15·Ö£© 11¡¢»¯¼ò(?4)2 £®16µÄƽ·½¸ùΪ ¡£
12¡¢ÒÑÖªÒ»¸öÕýÊýµÄÁ½¸öƽ·½¸ùÊÇ·Ö±ðΪ3x?2ºÍ5x?6£¬ÔòÕâ¸öÊýÊÇ £® 13¡¢ÒÑÖªxΪÕûÊý£¬ÇÒÂú×ã?2¡Üx¡Ü3£¬Ôòx? £® 14¡¢¶¨ÒåÔËËã¡°@¡±µÄÔËËã·¨ÔòΪ: x@y=
xy?4 £¬Ôò (2@6)@8? £®
15¡¢Óô¸×ÓÒÔÏàͬµÄÁ¦½«Ò»¸ùÌú¶¤´¹Ö±¶¤Èëľ¿é£¬Ëæ×ÅÌú¶¤µÄÉîÈ룬Ìú¶¤ËùÊܵÄ×èÁ¦Ò²Ô½À´Ô½´ó. µ±Ìú¶¤Î´
1. ÒÑÖªÕâ¸öÌú¶¤±»Çû÷3´ÎºóÈ«²¿½øÈëľ3¿é£¨Ä¾¿é×ã¹»ºñ£©£¬ÇÒµÚÒ»´ÎÇû÷ºó£¬Ìú¶¤½øÈëľ¿éµÄ³¤¶ÈÊÇacm£¬ÈôÌú¶¤×ܳ¤¶ÈΪ5 cm£¬ÔòaµÄÈ¡Öµ·¶Î§
½øÈëľ¿é²¿·Ö³¤¶È×㹻ʱ£¬Ã¿´Î¶¤Èëľ¿éµÄÌú¶¤³¤¶ÈÊÇÇ°Ò»´ÎµÄÊÇ
Èý¡¢¼ÆËãÌ⣨±¾Ìâ¹²3СÌ⣬ÿСÌâ6·Ö£¬¹²18·Ö£© 16¡¢ÇóÖµ£º361111?1?1??(?4)2? 125254?x?3?3?x?1?17¡¢½â²»µÈʽ×é?2£¬²¢°ÑËüµÄ½â¼¯ÔÚÊýÖáÉϱíʾ³öÀ´.
??1?3(x?1)?8?x?3(x?1)?4x?2,?18¡¢½â²»µÈʽ×é?xx?1?.?3?2
£¬²¢Ð´³ö²»µÈʽ×éµÄÕûÊý½â£®
µÚ¢ò¾í£¨Êýѧ´ðÌâ¾í£©
°à¼¶ ÐÕÃû ³É¼¨
Ò»¡¢Ñ¡ÔñÌ⣨ÿСÌâ3·Ö£¬¹²30·Ö£© ÌâºÅ ´ð°¸
1 2 3 4 5 6 7 8 9 10 ¶þ¡¢Ìî¿ÕÌ⣨ÿСÌâ3·Ö£¬¹²15·Ö£©
11¡¢ £»12¡¢ £»13¡¢ £»14¡¢ £»15¡¢ £» Èý¡¢¼ÆËãÌ⣨±¾Ìâ¹²3СÌ⣬ÿСÌâ6·Ö£¬¹²18·Ö£© 16¡¢ 17¡¢ 18¡¢
ËÄ¡¢£¨±¾Ìâ¹²2СÌ⣬19Ìâ8·Ö£¬20Ìâ 7·Ö¹²15·Ö£©
19¡¢£¨1£©ÒÑÖª2aµÄƽ·½¸ùÊÇ?2£¬3ÊÇ3a?bµÄÁ¢·½¸ù£¬Çóa?2bµÄÖµ
2£¨2£©ÒÑÖª5µÄÕûÊý²¿·ÖΪa£¬Ð¡Êý²¿·ÖΪb£¬Çóa?ab?bµÄÖµ