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高中數(shù)學(xué)交集和并集練習(xí)題

時(shí)間:2024-08-23 17:05:07 30

    高中數(shù)學(xué)交集和并集練習(xí)題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      從小學(xué)、初中、高中到大學(xué)乃至工作,我們經(jīng)常接觸到練習(xí)題,只有多做題,學(xué)習(xí)成績(jī)才能提上來。學(xué)習(xí)就是一個(gè)反復(fù)反復(fù)再反復(fù)的過程,多做題。一份什么樣的習(xí)題才能稱之為好習(xí)題呢?下面是小編收集整理的高中數(shù)學(xué)交集和并集練習(xí)題,歡迎大家分享。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

    uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      高中數(shù)學(xué)交集和并集練習(xí)題 1

      交集、并集uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      若集合A={x|x是6的倍數(shù)},B={x|x是4的倍數(shù)},則A與B有公共元素嗎?它們的公共元素能組成一個(gè)集合嗎?uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      兩個(gè)集合A與B的公共元素能組成一個(gè)集合嗎?若能組成一個(gè)集合C,則C與A、B的關(guān)系如何?uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      基礎(chǔ)鞏固uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1.若集合A={0,1,2,3,4},B={1,2,4}則AB=( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.{0,1,2,3,4} B.{1,2,3,4}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.{1,2} D.{0}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:AuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2.設(shè)S={x||x|3},T={x|3x-51},則ST=( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.B.{x|-33}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.{x|-32} D.{x|23}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:CuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3.已知A,B均為集合U={1,3,5,7,9}的子集,且AB={3}, AUB={9},則A=( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.{1,3} B.{3,7,9}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.{3,5,9} D.{3,9}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:DuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      4.設(shè)A={(x,y)|4x+y=6},B={(x,y)|3x+2y=7},則AB為( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.{x=1,或y=2} B.{1,2}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.{(1,2)} D.(1,2)uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:AB=x,y4x+y=63x+2y=7={(1,2)}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:CuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      5.已知集合A={(x,y)|x,yR且x2+y2=1},B={(x,y)|x,yR且x+y=1,則AB的元素個(gè)數(shù)為( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.4個(gè) B.3個(gè) C.2個(gè) D.1個(gè)uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:由x2+y2=1,x+y=1x=1,y=0或x=0,y=1,uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      即AB={(1,0),(0,1)}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:CuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      6.已知全集U={0,1,2,3,4},集合A={1,2,3},B={2,4},則(UA)B為( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.{1,2,4} B.{2,3,4}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.{0,2,4} D.{0,2,3,4}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:CuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      7.已知方程x2-px+15=0與x2-5x+q=0的解分別為M和S,且MS={3},則pq=________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:∵M(jìn)S={3},uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3既是方程x2-px+15=0的根,又是x2-5x+q=0的根,從而求出p,q。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:43uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      8.已知全集S=R,A={x|x1},B={x|05},則(SA)B=________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:SA={x|x1}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:{x|15}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      9.設(shè)集合A={x||x-a|1,xR},B={x|15},若AB=,則a的取值范圍是________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:∵A={x|a-1a+1},若AB=,則a+11或a-1a0或a6.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:{a|a0或a6}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      10.設(shè)集合A={0,1,2,3,4,5,7},B={1,3,6,8,9},C={3,7,8},那么集合(AC是________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:{1,3,7,8}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      11.滿足條件{1,3}A={1,3,5}的.所有集合A的個(gè)數(shù)是________個(gè)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:4uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      能力提升uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      12.集合A={x||x|1,xR},B={y|y=x2,xR},則AB為( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.{x|-11} B.{x|x0}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.{x|01} D.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:∵A={x|-11},B={y|y0}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      AB={x|01}.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:CuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      13.若A、B、C為三個(gè)集合,且有AB=BC,則一定有()uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A.AC B.CAuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      C.A D.A=uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:AuTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      14.設(shè)全集U={a,b,c,d},A={a,b},B={b,c,d},則UAUB=________uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:UA={c,d},UB={a},uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      UAUB={a,c,d}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:{a,c,d}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      15.(2013上海卷)設(shè)常數(shù)aR,集合A={x|(x-1)(x-a)0},B={x|xa-1},若AB=R,則a的取值范圍為________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:當(dāng)a1時(shí),A={x|x1或xa},uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      要使AB=R,則a1,a-112;uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      當(dāng)a1時(shí),A={x|xa或x1},要使AB=R,則a1,a-1a1。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      綜上,auTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:{a|a2}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      16.已知集合A={x||x+2|3,xR},集合B={x|(x-m)(x-2)0},xR},且AB=(-1,n),求m和n的值。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:|x+2|-3x+2-51,uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A={x|-51},又∵AB=(-1,n),uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

     ?。?是方程(x-m)(x-2)=0的根,即m=-1,此時(shí)B={x|-12},AB=(-1,1),即n=1。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      17.設(shè)集合P={1,2,3,4},求同時(shí)滿足下列三個(gè)條件的集合A:uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      (1)AP;uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      (2)若xA,則2xA;uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      (3)若xPA,則2xPA.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:∵21=2,22=4,因此1和2不能同時(shí)屬于A,也不能同時(shí)屬于UA,同樣地,2和4也不能同時(shí)屬于A和UA,對(duì)P的子集進(jìn)行考查,可知A只能為:{2},{1,4},{2,3}{1,3,4}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      18.設(shè)集合A={x|x+10或x-40},B={x|2aa+2}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      (1)若A,求實(shí)數(shù)a的取值范圍;uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      (2)若AB=B,求實(shí)數(shù)a的取值范圍。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解析:(1)A={x|x-1或x4},uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      ∵A,uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2a2+a,a+24或2aa+2,2a-1。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      a=2或a-12.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      綜上所述,實(shí)數(shù)a的取值范圍為aa-12或a=2.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      (2)∵AB=B,BA.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

     ?、貰=時(shí),滿足BA,則2aa+22,uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

     ?、贐時(shí),則uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2aa+2,a+2-1或2aa+2,2a4.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      即a-3或a=2.uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      綜上所述,實(shí)數(shù)a的取值范圍為{a|a-3或a=2}。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      高中數(shù)學(xué)交集和并集練習(xí)題 2

      一、選擇題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1.已知集合/(A=/{1,2,3,4/}/),/(B=/{3,4,5,6/}/),則/(A/cap B=/)( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A./{1,2/} B./{3,4/} C./{5,6/} D./{1,2,3,4,5,6/}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2.集合/(M=/{x|x^2 - 4 = 0/}/),/(N=/{-2,0,2/}/),則/(M/cup N=/)( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A./(/{-2,0,2/}/) B./(/{-2,2/}/) C./{0/} D./(/{-2,0,2,4/}/)uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3.若集合/(A=/{x|x/gt1/}/),/(B=/{x|x/lt2/}/),則/(A/cap B=/)( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A./(R/) B./(/{x|1/lt x/lt2/}/) C./(/varnothing/) D./{1,2/}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      4.設(shè)集合/(P=/{1,2,3/}/),/(Q=/{2,3,4/}/),/(S=/{3,4,5/}/),則/((P/cap Q)/cup S=/)( )uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      A./{1,2,3,4,5/} B./{2,3,4/} C./{3,4,5/} D./{1,2,5/}uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      二、填空題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1.已知集合/(A=/{x|x/geq -1/}/),/(B=/{x|x/leq 3/}/),則/(A/cap B=/)________,/(A/cup B=/)________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2.若集合/(M=/{a,b,c/}/),/(N=/{b,c,d/}/),則/(M/cap N=/)________,/(M/cup N=/)________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3.集合/(A=/{x|-2/lt x/lt4/}/),/(B=/{x|x/leq 1/}/),則/(A/cap B=/)________,/(A/cup B=/)________。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      三、解答題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1.已知集合/(A=/{x|x^2 - 5x + 6 = 0/}/),/(B=/{x|x^2 - 3x + 2 = 0/}/),求/(A/cap B/)和/(A/cup B/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2.集合/(M=/{x|x^2 - 4x + 3 = 0/}/),/(N=/{x|x^2 - ax + a - 1 = 0/}/),若/(M/cup N = M/),求實(shí)數(shù)/(a/)的值。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3.設(shè)集合/(A=/{x|-1/leq x/leq 2/}/),/(B=/{x|m - 1/leq x/leq m + 1/}/),若/(A/cap B=/varnothing/),求實(shí)數(shù)/(m/)的取值范圍。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      答案:uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      一、選擇題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1.B。/(A/cap B/)即兩個(gè)集合中共同的元素,/(A=/{1,2,3,4/}/)與/(B=/{3,4,5,6/}/)的.共同元素是 3 和 4。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2.B。先求解/(M=/{x|x^2 - 4 = 0/}/),即/(x^2 = 4/),解得/(x = 2/)或/(x = -2/),所以/(M=/{-2,2/}/),則/(M/cup N=/{-2,2/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3.B。/(A=/{x|x/gt1/}/),/(B=/{x|x/lt2/}/),交集是同時(shí)滿足兩個(gè)條件的部分,即/(1/lt x/lt2/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      4.A。/(P/cap Q=/{2,3/}/),/((P/cap Q)/cup S=/{2,3/}/cup/{3,4,5/}=/{1,2,3,4,5/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      二、填空題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1./(A/cap B=/{x|-1/leq x/leq 3/}/),/(A/cup B = R/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2./(M/cap N=/{b,c/}/),/(M/cup N=/{a,b,c,d/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3./(A/cap B=/{x|-2/lt x/leq 1/}/),/(A/cup B=/{x|-2/lt x/lt4/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      三、解答題uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      1.解/(x^2 - 5x + 6 = 0/),分解因式得/((x - 2)(x - 3)=0/),解得/(x = 2/)或/(x = 3/),所以/(A=/{2,3/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解/(x^2 - 3x + 2 = 0/),分解因式得/((x - 1)(x - 2)=0/),解得/(x = 1/)或/(x = 2/),所以/(B=/{1,2/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      則/(A/cap B=/{2/}/),/(A/cup B=/{1,2,3/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      2.解/(x^2 - 4x + 3 = 0/),分解因式得/((x - 1)(x - 3)=0/),解得/(x = 1/)或/(x = 3/),所以/(M=/{1,3/}/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      因?yàn)?(M/cup N = M/),所以/(N/subseteq M/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解/(x^2 - ax + a - 1 = 0/),分解因式得/((x - 1)[x-(a - 1)]=0/),解得/(x = 1/)或/(x = a - 1/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      當(dāng)/(a - 1 = 1/)時(shí),即/(a = 2/),此時(shí)/(N=/{1/}/),滿足/(N/subseteq M/);uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      當(dāng)/(a - 1 = 3/)時(shí),即/(a = 4/),此時(shí)/(N=/{1,3/}/),也滿足/(N/subseteq M/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      綜上,/(a = 2/)或/(a = 4/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      3.因?yàn)?(A/cap B=/varnothing/),所以/(m + 1/lt -1/)或/(m - 1/gt 2/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      解/(m + 1/lt -1/),得/(m/lt -2/);解/(m - 1/gt 2/),得/(m/gt 3/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

      所以實(shí)數(shù)/(m/)的取值范圍是/(m/lt -2/)或/(m/gt 3/)。uTg萬博士范文網(wǎng)-您身邊的范文參考網(wǎng)站Vanbs.com

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