新GRE数学要点
Intersection of Sets
Intersection of two sets is another set with only the members that are in both sets. If the two sets do not share any common member, the intersection is the empty set with no member.
Example:
Intersection of {1,2,3} and {2,3,5} is the set {2,3}。
Intersection of the set with all primes and the set with all even numbers is the set {2} since only 2 is both even and prime.
Intersection of {1,2,3} and {4,5,6} is the empty set {}。
Remember:
Intersection contains only the common members.
Two sets are disjoint if they have no member in common, that is they have an empty intersection.
Union of Sets
Union of two sets is another set with all the members from both sets.
上一篇: gre数学基本概念汇总表
下一篇: 十道不得不看的GRE数学经典排列组合题
高考英语作文素材汇总:要言而有信 Be True to Your Word
攻克翻译生词,给你支一招
高考英语作文素材汇总:一年四季 The Four seasons
高考英语作文素材汇总:邀请朋友参加生日聚会 Inviting Friends to a Birthday Party
2017届高考英语考前冲刺考纲词汇强化人教版选修8 unit 3《Inventors and inventions》课件
高考英语作文素材汇总:学生的色彩观 Students Evaluation of Colors
2017届高考英语考前冲刺考纲词汇强化人教版选修8 unit 2《Cloning》课件
高考英语作文素材汇总:寻找宝藏 Search Your Own Treasure
高考英语作文素材汇总:一个文明社会的指数 Index of a Civilized Society
英语美文:这一天,什么也没发生
高考英语作文素材汇总:意外之祸 An Accident
无味香水让你散发独特味道
高考英语作文素材汇总:一次野生训练 A Wilderness Survival Program
翻译备考技巧:三大常见错误要避免!
高考英语作文素材汇总:声明书 Make An Announcement
口译笔译必备句型:大会讲话发言
2017届高考英语考前冲刺考纲词汇强化人教版选修8 unit 4《Pygmalion》课件
2017届高考英语考前冲刺考纲词汇强化人教版选修10 units1-2
高考英语作文素材汇总:学习外语易犯的错误 Mistakes in Foreign Language Learning
高考英语作文素材汇总:学生是否应该学做家务 A Laconic Answer to Our Meetings
高考英语作文素材汇总:有礼貌与没礼貌 Good Manners and Bad Manners
2017届高考英语一轮复习课件:选修8 Unit4《Pygmalion》(新人教版福建专用)
高考英语作文素材汇总:有关父母溺爱孩子的话题作文素材
高考英语作文素材汇总:欧洲男女最爱用什么方式打发时间
高考英语作文素材汇总:选择事业还是家庭 Career or Family
主要节日、纪念日及活动日如何口译笔译
真正的学霸是怎么学习的
高考英语作文素材汇总:运动对我们的健康有益 sports exercise health
高考英语作文素材汇总:游览长城 Visiting the Great Wall
高考英语作文素材汇总:有钱能买幸福吗 Can money buy happiness