五年制高职数学(第一册)
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练习

1.写出集合A={-1,0}的所有子集和真子集.

2.判断下面集合之间的关系:

(1)A={x|x2-1=0,B={-1,1};

(2)A={x||x|=3};B={-3,3};

(3)A={1,2,3,4,5};B={4,5,1};

(4)A={2,4,8},B={x|x是16的正因数}.

3.用适当的符号填空.

(1)0______{0,1,2};  (2){0}______{0,1,2};

(3)0______{0};  (4)∅______{0};

(5){1,2}______{2,1,0};  (6){a,b,c}______{a,c};

(7)∅______{0};  (8){x|x2-1=0}______∅;

(9){x|x>5}______{x|5<x<7};  (10){-1}______{x|x2=1};

(11){平行四边形}______{矩形}.