解题方法
1 . 设a,b∈R,集合{1,a+b,a}=
,求b2010-a2011的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d246813e067223de154348b85c48fe.png)
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2 . 在下列各式中错误的个数是
①1∈{0,1,2};
②{1}∈{0,1,2};
③{0,1,2}⊆{0,1,2};
④{0,1,2}={2,0,1};
⑤{0,1}⊆{(0,1)};
⑥∅⊆{0}
①1∈{0,1,2};
②{1}∈{0,1,2};
③{0,1,2}⊆{0,1,2};
④{0,1,2}={2,0,1};
⑤{0,1}⊆{(0,1)};
⑥∅⊆{0}
A.1 | B.2 | C.3 | D.4 |
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