A(?1,2) 𰸡A
B(0,1) C(?1,0) D(1,2)
ᣬȡP,QԪأP?Q?(?1,2) 㡿
ʦ㾦ڼϵĽ⣬ӦȰѼϻټ㣬Τͼ 6.20171輯A?{1,2,6},B?{2,4},C?{x?R|?1?x?5}(AA{2} B{1,2,4} C{1,2,4,6} D{x?R|?1?x?5}
B)C?
𰸡B
(AB)C?{1246}[?15]?{124} ,ѡB.
㡿 ϵ
ʦ㾦ϵĽ⣬ӦȰѼϻټ㣬Τͼд. 7.2017գ1֪A?{1,2}B?{a,a2?3}AB?{1}ʵaֵΪ . 𰸡1
221?BȻa?3?3a?1ʱa?3?4⣬ʴΪ1
㡿ԪصĻ
ʦ㾦(1)Ԫصԣʱ弯Ԫص(ǵ㼯)ͻȷȾ.
(2)עԪصĻ.ڽļʱҪע鼯ԪصĻԣܻܿΪ㡰ԡ½. (3)ռ.ڽйA©.
B??,A?BȼʱԿռһȿ?Ƿ
2016߿ȫչʾ 21.2016α1,1輯A?xx?4x?3?0 ,x2x?3?0,A????B?
A??3,?? B??3,? C?1,? D?𰸡D
??3?2???3?2??3??2??3?,3? ?2?
5
㣺ϵĽ
ʦ㾦ÿеıؿ,һԻʽ,÷.һҪѲļϻΪʽٽ,Dzʽ⼯ֵй֮,. 2.2016¿α3輯S??x|(x?2)(x?3)?0?,T??x|x?0? ST?
(A) [23] (B)-? 2]U [3,+? (C) [3,+? (D)02]U [3,+? 𰸡D
ɵ㲦оϵĹϵϵĽ⣬Τͼȼι߸⣮һأɢļϼĹϵ㣬ɽΤͼļϼ㼰ϵɽֱԣкת
3.2016¿α2֪A?{1,2,3}B?{x|(x?1)(x?2)?0,x?Z}AA{1} B{12} C{0123} 𰸡C
B?{x|?1?x?2,x?Z}?{0,1}A?{1,2,3}A㣺 ϵ.
B?
D{?10123}
B?{0,1,2,3}ѡC.
ʦ㾦ϵĽ⣬ӦȰѼϻڼ㣬Τͼ.
4. 2016ɽ輯A?{y|y?2x,x?R},B?{x|x2?1?0}, AA(?1,1) 𰸡C
A?{y|y?0}B?{x|?1?x?1}A㣺1.ָʣ2.ⲻʽ3.ϵ.
ʦ㾦Ҫ鼯ϵIJһĿ.ĿϵĻ㣬DZؿ㣬Ҳǿض÷ֵĿ֮һ.ֵⲻʽϣ˿ĸ. 5.2016㽭֪P?x?R1?x?3,Q?x?Rx?4, P?(eRQ)?
ѡC. B?-1+?
B(0,1)
C(?1,??)
B=
D(0,??)
???2? 6
A[2,3] B( -2,3 ] C[1,2) D(??,?2]?[1,??) 𰸡B
RQ?xx?4?(?2,2),?Pݲ?2?(RQ)?(?2,2)?1,3????2,3?ѡB
㣺1һԪβʽ2ϵIJ
״㾦һԪβʽʱxϵһҪ֤ΪxϵǸһҪΪ׳
6.2016걱֪A?{x||x|?2}B?{?1,0,1,2,3}AA.{0,1}B.{0,1,2} C.{?1,0,1} D.{?1,0,1,2} 𰸡C
A?{x|?2?x?2}A?B?{?1,0,1}ѡC. 㣺Ͻ.
ʦ㾦1 ҪŪ幹ɼϵԪʲô(Ԫص)ǵ㼯缯
22B?
{x|y?f(x)}{y|y?f(x)}{(x,y)|y?f(x)}Dzͬģ
2еԪؾԡȷԡԡԣرǻԣжϼԪصĸʱԼںεļУӻԣڼ
3νϳʹϼݡֱۣɢϼ㣬ɽVennͼʵʩ㣬УԵ㼯㣬ͨƽڵͼ⣬ڱν˼ֺã
4ռDzκԪصļϣδȷ˵һϷǿյ£ҪǼΪռĿܣ⣬ɺӿռκԪصӼ
7.2016Ĵ輯A?{x|?2?x?2}ZΪAA3 B4 C5 D6 𰸡C
⣬AZԪصĸǣ
Z?{?2,?1,0,1,2}еԪظΪ5ѡC.
㣺н.
ʦ㾦ϵĸһֱǵȵ㣬ÿؿݣ.һǽϲʽĶֵ飬ĹؼǽΤͼ.
82016֪A?{1,2,3,4},B?{y|y?3x?2x?A},A{1}
AB=
B{4} C{1,3}
D{1,4}
7
𰸡D
B?{1,4,7,10},AB?{1,4}.ѡD. 㣺
ʦ㾦ص㿼鼯ϵ㣬׳ĵط⣬ڻ⣬ѵϵС.һҪעõĴϰߣִĴȷϽĿԪػԣز©.
9.2016վ֪A?{?1,2,3,6},B?{x|?2?x?3},A𰸡??1,2? AB=____________.
B?{?1,2,3,6}{x|?2?x?3}?{?1,2}
㣺
ʦ㾦ص㿼鼯ϵ㣬׳ĵط⣬ڻ⣬ѵϵС.һҪעõĴϰߣִĴȷնڼĿоٷǿԼйظ
8