名校
1 . 设集合
,若
是
的子集,把
中的所有数的和称为
的“容量”(规定空集的容量为0),若
的容量为奇(偶)数,则称
为
的奇(偶)子集,命题①:
的奇子集与偶子集个数相等;命题②:当
时,
的所有奇子集的容量之和与所有偶子集的容量之和相等,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b95e3c6e96848485ecd4bbbda55a3b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.命题①和命题②都成立 | B.命题①和命题②都不成立 |
C.命题①成立,命题②不成立 | D.命题①不成立,命题②成立 |
您最近一年使用:0次
2019-12-04更新
|
1872次组卷
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4卷引用:2016届浙江省温州市十校联合体高三上学期期初联考理科数学试卷
2 . 已知等差数列
的通项公式为
,前
项和为
,若不等式
恒成立,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c1ed7b10ac7ca1cd81cdd39a8fcc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4ef7370062b7bc01b238f5566088b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2018-03-06更新
|
435次组卷
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4卷引用:浙江省金华市磐安县第二中学2020届高三下学期返校检测试数学试题
浙江省金华市磐安县第二中学2020届高三下学期返校检测试数学试题天一大联考2017—2018学年高中毕业班阶段性测试(四)理科数学(已下线)2018高三二轮复习之测试专项【新课标版理科数学】 方法二 换元法(已下线)2018高三二轮复习之测试专项【新课标版文科数学】 方法二 换元法
3 . 设
,
为椭圆
的左、右焦点,动点
的坐标为
,过点
的直线与椭圆交于
,
两点.
![](https://img.xkw.com/dksih/QBM/2016/10/26/1573106686074880/1573106692562944/STEM/00407d23c08f4f0b88bac947f489a5a9.png)
(3)求
,
的坐标;
(4)若直线
,
,
的斜率之和为0,求
的所有整数值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36bfda1001f393f13d41531d6b7af50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2016/10/26/1573106686074880/1573106692562944/STEM/00407d23c08f4f0b88bac947f489a5a9.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(4)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2016-12-04更新
|
1086次组卷
|
3卷引用:2016-2017学年浙江普通高校招生学业水平考试数学试卷
4 . 设函数
的定义域为
,其中
.
(1)当
时,写出函数
的单调区间(不要求证明);
(2)若对于任意的
,均有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e89adf24b5653e711db2013b6d906c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d217c7b12e12e5fb67472452518859ec.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8e1dd8da540badcb9a8f427c5b202e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0313347c4fb22b033bac5074d9631e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c538cb679f324eed97878398996a377c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-04更新
|
1134次组卷
|
3卷引用:2016-2017学年浙江普通高校招生学业水平考试数学试卷