1 . 已知集合
,
,且
,则实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3032c793c40f5a63bcd2f98d05ca6385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f1b0858395d2424dc96616173c4b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abe8b4a5db357fe46ea6a0afd5aac2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2 . 已知集合
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74e359b347e0f35b30983329acc367.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5b84791d308e4629a0b2b88eb1b9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98407a3f4c8e10b89eaf82843f7a0ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74e359b347e0f35b30983329acc367.png)
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3 . 设集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bfabec7a3b2e912c1b549d0714341c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a38e7cd828755bd6a41e1efb9e7d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
您最近一年使用:0次
4 . 已知
是定义在
上的偶函数,当
时,
,则不等式
的解集是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a2532f0f9197e40db2e76c3dfc9301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ca6fec514e6f721e41ba8acbae7191.png)
您最近一年使用:0次
名校
5 . 已知全集
,集合
.若
,则实数a的值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18ce6ec47aeb1f6e7bfe684c498267e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b69fb8100ef607d69b93e9762d4530e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b2184ab4152f7f23a8ef09f10421d8.png)
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2016-12-04更新
|
710次组卷
|
2卷引用:2016届江苏省南京市高三第三次模拟考试数学试卷
解题方法
6 . 已知集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb490920f5832b657e71d14d6a8e263c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
您最近一年使用:0次
2016-12-04更新
|
469次组卷
|
2卷引用:2016届江苏省清江中学高三考前一周模拟二数学试卷
7 . 已知集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89c2738c320b1cd4f0f8681f1b37c71.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756b90930a3ba3e3f96dbd3bee313702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89c2738c320b1cd4f0f8681f1b37c71.png)
您最近一年使用:0次
名校
解题方法
8 . 若集合
,
则
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14e7ae20798ccbdcdc4f133e1b23bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a04b707b85fe8f6c8da7bc1a5ccf166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d259db9bb0e132881e875a77d324057.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
489次组卷
|
3卷引用:江苏省南通市学科基地2021届高三下学期高考全真模拟(一)数学试题
9 . 已知集合
,
,则
=_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5361ed288fa23f3b5d16cbc09d3293d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce27cc9c4ddad32fcee151597263ae48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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10 . 某地拟建一座长为
米的大桥
,假设桥墩等距离分布,经设计部门测算,两端桥墩
、
造价总共为
万元,当相邻两个桥墩的距离为
米时(其中
),中间每个桥墩的平均造价为
万元,桥面每1米长的平均造价为
万元.
![](https://img.xkw.com/dksih/QBM/2015/7/30/1572198128050176/1572198134079488/STEM/751580b6358f4eff81f05ffe98f42396.png)
(1)试将桥的总造价表示为
的函数
;
(2)为使桥的总造价最低,试问这座大桥中间(两端桥墩
、
除外)应建多少个桥墩?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28743c3ddd979fecbf05aa55490d2493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a254ec7a18213fc8235cb6154520e34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7af820f200c0bce3131184c20adc82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77191cbfe81edc042f382885e1821a5c.png)
![](https://img.xkw.com/dksih/QBM/2015/7/30/1572198128050176/1572198134079488/STEM/751580b6358f4eff81f05ffe98f42396.png)
(1)试将桥的总造价表示为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)为使桥的总造价最低,试问这座大桥中间(两端桥墩
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次