海量资源尽在星星文库:高一数学周周清(3)班级姓名分数一、选择题1.已知集合M={0,1,2},N={x|x=2a,aM},则集合MN等于(D)A、{0}B、{0,1}C、{1,2}D、{0,2}2.6|xNxS,3,2,1A,5,4,2B,那么(SA)(SB)等于(B)A.5,4,3,,1B.5,4,3,1,0C.5,4,3,2,1D.03.不等式2||2xx的解集是(B)A.21|xxx或B.21|xxC.RxD.4.设集合21|xxA,axxB|,若BA,则a的取值范围是(C)A.2aB.2aC.1aD.21a5.不等式012262xxx的解集是(B)A.23212|xxx或B.23212|xxx或C.22123|xxx或D.232|xx6.已知全集U=R,且A={x︱︱x-1︱2},B={x︱x2-6x+80},则(UA)∩B等于(C)A.{|14}xxB.{|23}xxC.{|23}xxD.{|14}xx7.已知2|32|x的解集与0|2baxxx的解集相同,则(B)A.45,3baB.45,3baC.45,3baD.417ba8.由下列各组命题构成“P或Q”,“P且Q”,“非P”形式的复合命题中,“P或Q”为真命题,“P且Q”为假命题,“非P”为真命题的是(B)A.P:3是偶数;q:4是奇数B.P:3+2=6;q:3>2海量资源尽在星星文库::a∈{a,b};q:{a}{a,b}D.p:QR;q:N=N+9.已知集合I=R,集合M={x|x=12n,nN},P={x|x=212n,nN},则M与P的关系是(B)A.MP=B.)(MCUP=C.M)(PCU=D.)(MCU)(PCU=10.设集合P={m|-1<m0},Q={m∈R|mx2+4mx-4<0对任意实数x恒成立},则下列关系中成立的是(A)A.PQB.QPC.P=QD.P∩Q=Q二.填空题:11.已知集合M={x|x∈N+,且8-x∈N+},则M中只含有两个元素的子集的个数有21个.12.设集合A={x||x|4},B=2|430xxx,则集合BAxAxx且|=|13xx。13.已知M={Z24m|m},N={x|}N23x,则M∩N=_.14.已知P:不等式012xx的解集为Φ,q:不等式012xx的解集为{x|1≤x≤2},则复合命题“P或q”为真命题;“P且q”为假命题。(填“真”或“假”)15.设集合A={x|x=4n+2,n∈Z},B={y|y=4m+3,m∈Z},当x0∈A,y0∈B,给出下列四个结论:①x0+y0∈B②x0y0∈A③x0-y0∈B④x0-y0∈A,其中正确结论的序号为②③.16.对集合M和N定义运算:M-N={x|xM且xN},又M*N=(M-N)∪(N-M),设X={1,3,5},Y={x∣0|x-1|3,xN},求X*Y.解:Y={x|0|x-1|3,x∈N}={0,2,3},X={1,3,5}X-Y={1,5},Y-X={0,2},∴X*Y={1,5}∪{0,2}={0,1,2,5}17.设A={x|x2+px+q=0}≠,M={1,3,5,7,9},N={1,4,7,10},若A∩M=,A∩N=A,求p、q的值.解:P=-8,q=16或p=-20,q=100或p=-14,q=4018.已知集合{|(2)[(31)]0}Axxxa,22(1){|0}xaxaBx.海量资源尽在星星文库:(1)当2a时,求AB;(2)求使BA的实数a的取值范围.解:(1)当2a时,(2,7)A,(4,5)B∴(4,5)AB.(2)∵2(2,1)Baa,当13a时,(31,2)Aa.要使BA,必须231212aaa,此时1a;当13a时,A=,使BA的a不存在;当13a时,A=(2,3a+1).要使BA,必须222131aaa,此时1≤a≤3.综上可知,使BA的实数a的取值范围为[1,3]∪{-1}19.已知命题p:,2|31|a命题:q集合},01)2(|{2RxxaxxA,}0|{xxB,且BA.如果命题p且q为假命题,p或q为真命题,求实数a的取值范围.解:命题p为真:,2|31|a解得,75a命题q为真:(1)当A时,则0,即,04)2(2a解得:;04a(2)当}0|{xxA时,得0)2(04)2(212axxa解得:.0a综上:a-4要使p真q假,则475aa解得:;45a要使p假q真,则47a5aa或解得:.7a所以,实数a的取值范围是45a或.7a20.(附加题)设1a,2a,3a,4a,5a为自然数,A={1a,2a,3a,4a,5a},B={21a,22a,23a,24a,25a},且1a2a3a4a5a,并满足A∩B={1a,4a},1a+4a=10,A∪B中各元素之和为256,求集合A?解:由A∩B={1a,4a},且1a2a3a4a5a.所以只可能1a=21a,即1a=1.由1a+4a=10,得4a=9.且4a=9=2ia(32i),2a=3或3a=3.Ⅰ.3a=3时,2a=2,此时A={1,2,3,9,5a},B={1,4,9,81,25a}.海量资源尽在星星文库:5a,故1+2+3+9+4+5a+81+25a=256,从而25a+5a-156=0,解得5a=12.略Ⅱ.2a=3时,此时A={1,3,3a,9,5a},B={1,9,23a,81,25a}.因1+3+9+3a+5a+81+23a+25a=256,从而25a+5a+23a+3a-162=0.因为2a3a4a,则33a9.当3a=4、6、7、8时,5a无整数解.当3a=5时,5a=11.略.