ÄÚÈÝ·¢²¼¸üÐÂʱ¼ä : 2025/1/11 11:31:51ÐÇÆÚÒ» ÏÂÃæÊÇÎÄÕµÄÈ«²¿ÄÚÈÝÇëÈÏÕæÔĶÁ¡£
Õã½Ê¡ÁúȪÖÐѧ2007¼¶¸ßÒ»Êýѧ±ØÐÞһģ¿é²âÊÔ¾í
Âú·Ö£º150·Ö ¿¼ÊÔʱ¼ä£º120·ÖÖÓ
°à¼¶ ÐÕÃû ºÅÊý ³É¼¨
Ò»¡¢Ñ¡ÔñÌ⣺(±¾´óÌâ¹²16СÌ⣬ÿСÌâ5·Ö£¬¹²80·Ö)
1£®É輯ºÏA?{x|?1¡Üx¡Ü2},B={x|0¡Üx¡Ü4},ÔòA¡ÉB=£¨ £© A£®£Û0,2£Ý B£®£Û1,2£Ý C£®£Û0,4£Ý D£®£Û1,4£Ý
2£®ÔÚÓ³Éäf:A?BÖУ¬A?B?{(x,y)|x,y?R}£¬ÇÒf:(x,y)?(x?y,x?y)£¬ÔòÓëAÖеÄÔªËØ(?1,2)¶ÔÓ¦µÄBÖеÄÔªËØΪ£¨ £© A.(?3,1)
B.(1,3)
C.(?1,?3)
D.(3,1)
3£®ÒÑÖªf(x)µÄ¶¨ÒåÓòΪ[?1,2)£¬Ôòf(|x|)µÄ¶¨ÒåÓòΪ£¨ £© A£®[?1,2) B£®[?1,1] C£®(?2,2) D£®[?2,2) 4£®Éèlg2?a£¬lg3?b£¬Ôòlog512µÈÓÚ£¨ £© A.
2a?ba?2b2a?ba?2b B. C. D. 1?a1?a1?a1?a05£®ÏÂÁйØϵʽÖУ¬³ÉÁ¢µÄÊÇ£¨ £©
?1?A£®log34????log110
?5?30?1?B£® log110????log34
?5?300?1??1?C£®log34?log110??? D£®log110?log34???
?5??5?331x2+1
6£®º¯Êýy=()+2,(x<0)µÄ·´º¯ÊýΪ£¨ £©
2A£®y=-log12(x?2)?1(x?2) B£®y=log12(x?2)?1(x?2)
C£®y=-log12(x?2)55(x?2)?1(2?x?) D£®y=log1?1(2?x?)
2227.ÏÂÁÐ˵·¨²»ÕýÈ·µÄÊÇ( ) A.·½³Ìf(x)=0ÓÐʵ¸ù?º¯Êýy=f(x)ÓÐÁãµã B.-x2+3x+5=0ÓÐÁ½¸ö²»Í¬Êµ¸ù C.y=f(x)ÔÚ?a,b?ÉÏÂú×ãf(a)?f(b)<0,Ôòy=f(x)ÔÚ?a,b?ÄÚÓÐÁãµã D.µ¥µ÷º¯ÊýÈôÓÐÁãµã,ÔòÖÁ¶àÓÐÒ»¸ö
8. ÏÂÃæ¹ØÓÚ¼¯ºÏµÄ±íʾÕýÈ·µÄ¸öÊýÊÇ£¨ £© ¢Ù{2,3}?{3,2}£»
¢Ú{(x,y)|x?y?1}?{y|x?y?1}£» ¢Û{x|x?1}={y|y?1}£»
¢Ü{x|x?y?1}?{y|x?y?1}£» A£®0 B£®1 C£®2 D£®3
9£®ÒÑÖªf(x)?ax7?bx5?cx3?2£¬ÇÒf(?5)?m, Ôòf(5)?f(?5)µÄֵΪ£¨ £© A£®4 B£®0 C£®2m D£®?m?4 10£®ÒÑÖªf(x)??A£®4
?x?3£¬ x¡Ý9£¬Ôòf(5)µÄֵΪ£¨ £©
?f[f(x?4)]£¬x?9 C£®8 D£®11
13 B£®6
1211.ÏÂÁеÈʽÖÐ,¸ùʽÓë·ÖÊýÖ¸ÊýÃݵĻ¥»¯ÕýÈ·µÄÊÇ£¨ £©
A£®?x?(?x)(x?0) B£®C£®x?346y?y(y?0)
21?13?4()(x?0) D£®x3??3x(x?0)
x12£®Èôº¯Êý£¨ £© A.
f(x)?logax(0?a?1)ÔÚÇø¼ä?a,2a?ÉϵÄ×î´óÖµÊÇ×îСֵµÄ3±¶£¬ÔòaµÄֵΪ
1122 B. C. D.
424213£®ÒÑÖªÔÚx¿Ëa%µÄÑÎË®ÖУ¬¼ÓÈëy¿Ëb%µÄÑÎË®£¬Å¨¶È±äΪc%£¬½«y±íʾ³ÉxµÄº¯Êý¹Ø
ϵʽ£¨ £© A£®y?c?ax c?bB£®y?c?ax b?cC£®y?c?bx c?aD£®y?b?cx c?a14£®Ä³ÆóÒµ½ü¼¸ÄêµÄÄê²úÖµÈçͼ£¬ÔòÄêÔö³¤ÂÊ×î¸ßµÄÊÇ£¨ £© £¨ÍòÔª£©1000A£®97Äê B£®98Äê
C£®99Äê
D£®00Äê
80015£®º¯Êýy= | lg£¨x-1£©| µÄͼÏóÊÇ£¨ £©
C
6004002009697989900(Ä꣩
16.ÔĶÁÏÂÁÐÒ»¶Î²ÄÁÏ£¬È»ºó½â´ðÎÊÌâ:¶ÔÓÚÈÎÒâʵÊýx£¬·ûºÅ[x]±íʾ ¡°²»³¬¹ýxµÄ×î´óÕûÊý¡±£¬ÔÚÊýÖáÉÏ£¬µ±xÊÇÕûÊý£¬[x]¾ÍÊÇx,µ±x²»ÊÇÕûÊýʱ£¬[x]Êǵãx×ó²àµÄµÚÒ»¸öÕûÊýµã£¬Õâ¸öº¯Êý½Ð×ö¡°È¡Õûº¯Êý¡±£¬Ò²½Ð¸ß˹£¨Gauss£©º¯Êý.Èç[-2]=-2,[-1.5]=-2,[2.5]=2. Çó[log2111]?[log2]?[log2]?[log21]?[log22]?[log23]?[log24]µÄֵΪ£¨ £© 432A£® 0 B£®-2 C£®-1 D£®1 ¶þ¡¢Ìî¿ÕÌ⣺£¨±¾´óÌâ¹²6СÌ⣬ÿСÌâ4·Ö£¬¹²24·Ö£© 17£®ÒÑÖªf(2x?1)?x2?2x£¬Ôòf(3)= 18£®º¯Êýf(x)?(x2?2)(x2?3x?2)µÄÁãµãÊÇ____________
?2?19£®ÈôÃݺ¯Êýf?x?µÄͼÏó¹ýµã?2,?2??£¬Ôòf?9??
??120£®º¯Êýy?2µÄÖµÓòΪ______________________
x?221£®Æ溯Êýf(x)Âú×ãf?x?3??f?x?£¬ÇÒf?1??2£¬Ôòf?5??
22£®¶ÔÓÚº¯Êýf(x),¶¨ÒåÓòΪD, Èô´æÔÚx0?Dʹf(x0)?x0, Ôò³Æ(x0,x0)Ϊf(x)µÄͼÏóÉϵIJ»¶¯µã. ÓÉ´Ë£¬º¯Êýf(x)?9x?5µÄͼÏóÉϲ»¶¯µãµÄ×ø±êΪ x?3Èý¡¢½â´ðÌ⣺£¨±¾´óÌâ¹²4СÌ⣬µÚÒ»Ìâ10·Ö£¬ÆäÓàÿСÌâ12·Ö£¬¹²46·Ö£© 23£®£¨±¾Ìâ10·Ö£©²»ÓüÆËãÆ÷ÇóÖµ£º £¨1£©log33427?lg25?lg4?7log72 364316?10£¨2?3£©?£¨22£©?£¨4£©2?42?80.25?£¨?2005£©£¨2£©£®
49