设集合
,在集合M中定义一种运算
,使得
.
(1)若
,
,试判断
是否为集合M中的元素,并说明理由;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb3d4d059a227b77fec28232123f115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd94e5c210921dfbe11796b1fc97cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acac35b04e6b8b589c35d3c369a7640.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ad43edf388c096e7704d92340bf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fb71f0467a746c9f6f61ed89587a0c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b536d164a94d280d4b1391ba6d4f3206.png)
更新时间:2021-10-19 13:30:11
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【知识点】 集合新定义
相似题推荐
解答题-问答题
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较易
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解题方法
【推荐1】已知集合:
;集合
(m为常数).
(1)定义
且
,当
时,求
;
(2)设命题
,命题
,若p是q成立的必要不充分条件,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bac01fa2b01a98a6c21602faab41e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63f3b4d210a4a917688ae7b39d10137.png)
(1)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f1471cfd26fe885ce80c1e8d4c4170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f1e3675e0fa3b790c416a751af63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a64dd4d5fab45b427a27951dddd6d3.png)
(2)设命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc11e9183ffccd297df4a1c18618bae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218c5309e534904dc6bf768074965239.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐2】已知集合
,
.
(1)求
,
;
(2)定义
且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521cfb6493378252b94e474396524177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625cb86ee300c143718a90d8a39477fd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9f46f945f5c61b518943d7a45a1120.png)
(2)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d91a167e34955f5a96df8cc2395d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d76e0475967ebd13497107eb97e46c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedf36d24ea4f9063259ea2018baae38.png)
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