登陆题目详情
单选题 设R={<1,2>,<2,3>,<5,4>,<3,4,>,<2,4>},则 dom(R)=
学科：离散数学A&B
时间：2023-06-09 03:09:40
题目1单选题
设R={,,,,},则 dom(R)=A. {2,3,4}B. {1,2,3,5}C. {1,2,3,4,5}D. {1,2,3}
题目2单选题
设R={,,,,},则 ran(R)=A. {1,2,3,5}B. {2,3,4}C. {1,2,3,4,5}D. {1,2,3}
题目3单选题
设R={,,,,},则 fld(R)=A. {1,2,3,5}B. {1,2,3}C. {1,2,3,4,5}D. {2,3,4}
题目4单选题
设集合A={a,b,c,d}, R是A上的关系,R={,,,,,}, 集合B={a,c}, 求A. {,,,,,}B. {,,,}C. {,}D.
题目5单选题
R={,,,,},求A. {,,,,}B. {,,,,}C. {,,,}D. {,}
题目6单选题
设R={,,,,},则A. {2,3,4}B. {1,2,3,5}C. {1,2,3,4,5}D. {1,2,3}
题目7单选题
设R={,,,,},则A. {2,3,4}B. {1,2,3,5}C. {1,2,3,4,5}D. {1,2,3}
题目8单选题
设F={,},H={,}, 则A. {}B. {,}C. {,}D. {}
题目9单选题
设F={,},G={}, H={,}, 则A. {,,}B. {,}C. {,,}D. {,,}
题目10单选题
设F={,},G={}, H={,}, 则A. {}B. {}C. {,}D. {,,}