Öйú¿óÒµ´óѧÐ캣ѧԺ ¡¶¸ßµÈÊýѧ¡·ÓÅÐã¿Î³Ì½¨Éè---ÀúÄêÊÔÌ⼯
A£®·¢É¢ B£®¾ø¶ÔÊÕÁ²
C£®Ìõ¼þÊÕÁ² D£®ÊÕÁ²Ó뷢ɢÓëkµÄȡֵÓйØ
¶þ¡¢Ìî¿ÕÌ⣨ÿ¿Õ 3 ·Ö£¬¹² 15 ·Ö£©
1¡¢ lim3?9?xyxy?x?0y?0? ¡£
2¡¢¼¶Êý?n?11n(n?1)µÄºÍΪ ¡£
3¡¢Í¨½âΪy?c1ex?c2e?2xµÄ΢·Ö·½³ÌÊÇ ¡£ 4¡¢Éèa?3£¬b?4£¬ÇÒa?b£¬Ôò(a?b)?(a?b)? ¡£ 5¡¢Éè?ÊÇÖùÃæx2?y2?1±»Æ½Ãæz?0£¬z?1Ëù½ØµÃÁ¢Ìå±íÃæµÄÍâ²à£¬Ôò??xdydz?ydzdx?zdxdy?_____________¡£
?Èý¡¢¼ÆËãÌ⣨¹²46·Ö£©
1¡¢£¨6·Ö£©Éèz?arctanx Çó
y?z?x £¬
?z?y¡£
2.£¨8·Ö£©¼ÆËã?41dy??2ylnxx?1n2dx¡£
3¡¢£¨8·Ö£©ÇóÃݼ¶Êý?n?1(x?5)n1 µÄÊÕÁ²°ë¾¶ºÍÊÕÁ²Óò¡£
4¡¢£¨8·Ö£©½«º¯Êýf(x)?''3?4x'Õ¹¿ªÎª(x?2)µÄÃݼ¶Êý²¢¸ø³öÊÕÁ²Óò¡£
xx?05¡¢£¨8·Ö£©½â·½³Ìy?5y?6y?xe£¬y6¡¢£¨8·Ö£©ÉèLÊÇ
ÓÉ
x??0£¬y?x?0??1¡¡¡£
Çú
3Ïß
y?0x?2y2?2,y2?x4?yÖ±ÓëyÏß
,y?ËùΧ³ÉÇøÓò3x?D0±ß½çÕýÏòÒ»ÖÜ£¬Çó
µÚ13Ò³£¬¹²8Ò³
Öйú¿óÒµ´óѧÐ캣ѧԺ ¡¶¸ßµÈÊýѧ¡·ÓÅÐã¿Î³Ì½¨Éè---ÀúÄêÊÔÌ⼯
?(1?Lyx22cosyx)dx?(sinyx?yxcosyx?x)dy ¡£
2ËÄ¡¢Ó¦ÓÃÌ⣨ÿÌâ12·Ö£¬¹²24·Ö£©
1. £¨12·Ö£©ÇóԵ㵽ÇúÃæz2?xy?x?y?4µÄ×î¶Ì¾àÀë¡£
x?y4222¡¢£¨12·Ö£©ÇóÇúÃæµÄÌå»ý¡£
?8?zÓëz?x?y22ËùΧ³ÉµÄÁ¢Ìå
Öйú¿óÒµ´óѧÐ캣ѧԺ2008£2009ѧÄêµÚ¶þѧÆÚ
¡¶¸ßµÈÊýѧ¡·¾¹ÜÀàÊÔ¾í
¿¼ÊÔʱ¼ä£º120·ÖÖÓ ¿¼ÊÔ·½Ê½£º±Õ¾í
Ò»¡¢ Ñ¡ÔñÌ⣨ÿÌâ 3 ·Ö£¬¹² 15 ·Ö£©
1.º¯Êýz?f(x,y)ÔÚµã(x0,y0)´¦¾ßÓÐÆ«µ¼ÊýÊÇËüÔÚ¸Ãµã´æÔÚȫ΢·ÖµÄ£¨ £©
A.³ä·Ö±ØÒªÌõ¼þ£» B.³ä·Ö¶ø·Ç±ØÒªÌõ¼þ£» C.±ØÒª¶ø·Ç³ä·ÖÌõ¼þ£» D.¼È·Ç³ä·ÖÓַDZØÒªÌõ¼þ 2.Éèz?y£¬Ôò(x?z?x??z?y)(2,1)?£¨ £©
A.2 B. 1+ln2 C.0 D. 1 3.ÈôÇøÓòDΪ0?y?x,x?2, Ôò??xydxdy?£¨ £©
D22A.0£» B. C.
643323£»
£» D.256
11?x4.Éèf(x,y)ÊÇÁ¬Ðøº¯Êý£¬½»»»¶þ´Î»ý·Ö?dx?00f(x,y)dyµÄ»ý·Ö
´ÎÐòºóµÄ½á¹ûΪ£¨ £©
A. ?
1?x0dy?f(x,y)dx£» B. ?dy?00111?x0f(x,y)dx£»
µÚ14Ò³£¬¹²8Ò³
Öйú¿óÒµ´óѧÐ캣ѧԺ ¡¶¸ßµÈÊýѧ¡·ÓÅÐã¿Î³Ì½¨Éè---ÀúÄêÊÔÌ⼯
C. ?dy?f(x,y)dx£» D. ?dy?0001111?y0f(x,y)dx
5.ÒÑÖªÖ±ÏßÔòa?£¨ £©
x?a3?y?2?z?1aÔÚÆ½Ãæ3x?4y?az?3a?1ÄÚ£¬
A£®1£» B£®2£» C£®
12£» D£®3
¶þ¡¢Ìî¿ÕÌ⣨ÿ¿Õ 3 ·Ö£¬¹² 15 ·Ö£©
1.
º¯
Êý
z?lx?ny)(xµÄ¶¨ÒåÓòΪ
__________________________________.
2.¼«ÏÞlimsin(xy)xx?0= _____________________ .
y??3.º¯Êý z?x2?4xy?y2?6x?8y?12µÄפµãÊÇ___________________. 4.
Éè
a?3£¬b?4£¬ÇÒa?b£¬Ôò
(a?b)?(a?b)?____________________.
5£®ÉècΪԲx2?y2?1ÉϵÚÒ»ÏóÏÞ²¿·Ö£¬ÔòÇúÏß»ý·Ö
?c(2x?y)ds?_______.
Èý¡¢¼ÆËãÌ⣨¹²46·Ö£©
21£®£¨6·Ö£©z?ulnv£¬u?yx£¬v?x?y£¬Çó
2222?z?x?y,
?z¡£
2£®£¨8
D:x?22·Ö£©¼ÆËã¶þÖØ»ý·Ö
x,2??(x?y)dxdy£¬ÆäÖÐ
Dy?2x?2y?¡£4 x3£®£¨8·Ö£©Çó΢·Ö·½³Ìy''?y'?0µÄͨ½â£¬²¢Çó³öÂú×ã³õʼÌõ¼þ
y(0)?0,y?(0)?1µÄÌØ½â¡£
µÚ15Ò³£¬¹²8Ò³
Öйú¿óÒµ´óѧÐ캣ѧԺ ¡¶¸ßµÈÊýѧ¡·ÓÅÐã¿Î³Ì½¨Éè---ÀúÄêÊÔÌ⼯
?4£®£¨8·Ö£© Çó³öÃݼ¶Êý?n?1xnn(n?1)1ÊÕÁ²°ë¾¶ºÍÊÕÁ²Óò¡£
5.£¨8·Ö£©½«º¯Êýf(x)?Á²Óò. 6.
3?xÕ¹¿ª³É£¨x-2£©µÄÃݼ¶Êý£¬²¢¸ø³öÊÕ
£¨
328·Ö£©¼ÆËã
22ÇúÏß»ý·Ö
?L(2xy?ycosx)dx?(1?2ysinx?3xy)dy£¬
ÆäÖÐLΪÔÚÅ×ÎïÏß2x???y2 ÉÏÓɵ㣨0£¬0£©µ½(?2,1)µÄÒ»¶Î»¡¡£
ËÄ¡¢Ó¦ÓÃÌ⣨ÿÌâ12·Ö£¬¹²24·Ö£©
1¡¢ÇóÇúÃæ
x?y422?8?zÓëz?x?y22ËùΧ³ÉµÄÁ¢ÌåµÄÌå»ý¡£
2¡¢Ä³¹¤³§Éú²úA¡¢BÁ½ÖÖ²úÆ·£¬ÆäÏúÊÛµ¥¼Û·Ö±ðΪpA?12Ôª£¬
pB?18Ôª£®×ܳɱ¾C(µ¥Î»£ºÍòÔª)ÊÇÁ½ÖÖ²úÆ·²úÁ¿xºÍy£¨µ¥Î»£ºÇ§¼þ£©
µÄº¯Êý£¬
C(x,y)?2x?xy?2y£¬
22Èô²úÁ¿ÏÞ¶îΪx?2y?18£¬ÔòÈçºÎ·ÖÅäÁ½ÖÖ²úÆ·µÄ²úÁ¿£¬¿É»ñµÃ×î´óÀûÈó£¿
Öйú¿óÒµ´óѧÐ캣ѧԺ2008£2009ѧÄê
¡¶ÎĿƸߵÈÊýѧ¡·ÆÚÄ©ÊÔ¾í
Ò»¡¢Ìî¿ÕÌ⣨ÿ¿Õ 2 ·Ö£¬¹² 20·Ö£©
1.
º¯
Êý
z?lx?ny)x(µÄ¶¨ÒåÓòΪ
__________________________________. 2.
µÚ16Ò³£¬¹²8Ò³
Ïà¹ØÍÆ¼ö£º