öλÔÓéÀֵǼÈë¿ÚÏÂÔØ

»ªÖÐũҵ´óѧ2018öλÔÓéÀÖ¹Ù·½appÏÂÔØÕæÌâÖ®611-Êýѧ

±¾Õ¾Ð¡±à FreeöλÔÓéÀÖ¹Ù·½appÏÂÔØÍø/2019-05-28

×¢Ò⣺ËùÓд𰸱ØÐëдÔÚ´ðÌâ±¾ÉÏ£¬²»µÃдÔÚÊÔÌâÖ½ÉÏ£¬·ñÔòÎÞЧ¡£Ò»µ¥ÏîÑ¡ÔñÌ⣨¹²24·Ö£¬Ã¿Ìâ3·Ö¡µ1Éèf(x)=x(x-l)(x-2£©£¨x-2018£©£¬Ôò£¯’£¨0)=()A.2018!B. -2018!c.2017!D.o2µ±x→0ʱ£¬ÏÂÁÐËĸöÎÞÇîСÖÐ±ÈÆäËûÈý¸öµÍ½×µÄÊÇ¡´¡µA.tanx-sinxB.(1-cosx)ln(l+x)C.(1+sinxY-lD. sin3x3Éèf(x)£½ÇÒ±Èlsinx£¬Ôòf(x£©ÓУ¨¡µ[xÒ»11A.1¸ö¿ÉÈ¥¼ä¶Ïµã£¬1¸öÌøÔ¾ÎʶϵãB. 2¸ö¿ÉÈ¥Îʶϵãc.1¸ö¿ÉÈ¥Îʶϵ㣬l ¸öÎÞÇî¼ä¶ÏµãD. 2¸öÌøÔ¾Îʶϵã4ÉèÇúÏßy=x2£«αx+bºÍ2y=-l£«²¼3Ôڵ㣨1,-l£©´¦ÏàÇУ¬Ôò²ÎÊý£¬bµÄֵΪ¡´¡µA.α£½3,b=lB.a=l,b=-3c.α£½l,b=-lD.α0,b=-25f2½Ð»÷£¬¸ö£½£¨£©A.Èý£«ln23B.Èý£«2ln23C..!.+ln23D..!.+2ln236¹ýµãP(l,O£©×÷Å×ÎïÏßy=FxτÑÔµÄÇÐÏߣ¬ÔòÓÉÇÐÏßÅ×ÎïÏߺÍxÖáËùÎ§Æ½ÃæÍ¼ ÐεÄÃæ»ýΪ¡´£©A.45B.-34c.-23D..!.8Èô0<P(B)<1ÇÒP((A1+A2)IB)=P(A1IB)+P(AiIB£©£¬ÔòÏÂÁÐÑ¡ÏîÕýÈ·µÄÊÇ£¨A.P((A1+Ai)IB)==P£¨ÂëIB)+P(AiIB)C.P(A1+A2)=P(A1IB)+P(A2IB)¶þÌî¿ÕÌâ¡´¹²40·Ö£¬Ã¿¿Õ4·Ö¡µB.P(A1B+A2B)=P(A1B)+P(A2B)D.P(B)==P(A1)P(BIA1)+P(A2)P(BIA22Éèf(x,y,z)ɰ2z3,ÇÒz=z(x,y£©ÊÇÓÉÍò³Ìx2+y2+z2-3.xyz=0È·¶¨µÄÒþº¯Êý£¬±´´¨df(x,y,z)l(1,1,1i=3Éèz=z(x,y£©ÓÉ·½³ÌF(x£«Èý£¬y£«Èý£©0ËùÈ·¶¨£¬ÆäÖÐFÊÇÈÎÒâ¿É΢º¯Êý£¬Ôò4ÒªÔìÒ»Ô²ÖùÐÎÓ͹Þ£¬µ±µ×Ö±¾¶Óë¸ßµÄ±ÈֵΪһһʱ£¬´ËÓ͹޵ıíÃæ»ý×îС£®5¹ýµãP(l,O£©×÷Å×ÎïÏßy=..JxÊ¿ÍõµÄÇÐÏߣ¬ÔòÓÉÇÐÏßÅ×ÎïÏߺÍxÖáËùÎ§Æ½ÃæÍ¼ ÐÎÈÆxÖáÐýתһÖÜËùµÃµÄÐýתÌåµÄÌå»ýΪ£¬ÈÆvÖáÐýתһÖÜËùµÃµÄÐýתÌåµÄÌå»ýΪ6,Éè½Ð£º;J¾ØÉ½ABA•==2BA•+IÔòiBl=7ÉèÈý½×¾ØÕóAÓëBÏàËÆ£¬ÇÒI3/+2AI=0,I3/+Bl=II-2BI=0£¬ÆäÖÐIΪÈý½×µ¥Î»¾ØÕó£¬Ôò£ü¾çµÄ´úÊýÓà×ÓʽA11+Ai2+A33==¿ÆÄ¿´úÂë¼°Ãû³Æ£º611ÊýѧעÒ⣺ËùÓд𰸱ØÐëдÔÚ´ðÌâ±¾ÉÏ£¬²»µÃдÔÚÊÔÌâÖ½ÉÏ£¬·ñÔòÎÞЧ¡£8Éèx·þ´Ó²ÎÊýΪ1µÄÖ¸Êý·Ö²¼£¬Ôòy=e-3XµÄ¸ÅÂÊÃܶÈΪ9ÉèËæ»ú±äÁ¿X·þ´Ó²ÎÊýΪ1µÄÖ¸Êý·Ö²¼£¬ÁîY=2X£«¿õÈÕ£¬ÔòYµÄÊýѧÆÚÍû2Ç󷽳̣¨secx-ytanx)dx-dy=OµÄͨ½â£®3Èç¶þrJIIJoJffl4É裨X,Y£©µÄÁªºÏÃܶÈf(x,y)=¶þ0<x.£Ü0<y<2xlυ£¬¹²ÒÒ(1£©Çó³£ÊýkµÄÖµ·( 2 £© Çó¹ØÓÚ X ,YµÄ±ßÔµÃܶȣ»(3£©ÇóP{X+YÈýI}.ËÄÖ¤Ã÷Ì⣨¹²33·Ö£¬Ã¿Ìâ11·Ö¡µ1É躯Êýf(x£©ÔÚ±ÕÇøÎÊ£Û»ú£ÝÉÏÁ¬Ðø£¬ÇÒÂú×ãJ;f(x£©Ãü0,J;f(x)co£½0.Ö¤Ã÷£ºÔÚ¿ªÇøÎÊ£¨0£¬¶ÔÄÚÖÁÉÙ´æÔÚÁ½¸ö²»Í¬µÄµã£¿£¬£¬q2’ʹ£¯£¨£¿1)=£¯£¨ι=0.2Éèx>O£¬ÇóÖ¤£ºarctanx£«ÍÁ£¾Ö÷x23Éè½Ð£¬¶Ö£¬α3ÊÇÆë´ÎÏßÐÔ·½³Ì×éAx=OµÄÒ»¸ö»ù´¡½âϵ£¬ Ö¤Ã÷£ºα1£«Ãù£¬α2£«¹ê£¬α3£«α1Ò²ÊǸ÷½³Ì×éµÄÒ»¸ö»ù´¡½âϵ£®ÎåÓ¦ÓÃÌ⣨¹²13·Ö£©Ä³¹«Ô¢ÓÐ400»§×¡»§£¬Ò»»§×¡»§ÓµÓÐÆû³µÁ¾ÊýxµÄ·Ö²¼ÂÉÈçÏ£ºÎÊ×îÉÙÐèÒªÉèÁ¢¶àÉÙ¸ö³µÎ»£¬²ÅÄÜʹÿÁ¾Æû³µ¶¼ÓÐÒ»¸öÍ£³µÎ»µÄ¸ÅÂÊÖÁÉÙΪ0.95.£¨φ£¨1.65)=0.9505£¬φ£¨0.95)=0.8289)öλÔÓéÀÖ¹Ù·½appÏÂÔØ¸ß·Ö×ÉѯÂÞÀÏʦµç»°/΢ÐÅ£º**×ÉѯQQ£º**

Ïà¹Ø»°Ìâ/ÊÔÌâ »ù´¡ Æû³µ ¸ÅÂÊ Êýѧ

öλÔÓéÀÖ(xinhui)¹Ù·½ÍøÕ¾_öλÔÓéÀÖappÏÂÔØÈë¿Ú