1 . 已知点
的坐标满足条件
,点O为坐标原点,那么|OP|的最大值等于___ .
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572981576130560/1572981581537280/STEM/af507a5f04fc40788e5bf2f1b450180c.png?resizew=51)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572981576130560/1572981581537280/STEM/53cbeb3cfd034dea95248f2ffd750b48.png?resizew=71)
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2 . 已知数列{an}满足an+1+2an=0,a2=﹣6,则{an}的前10项和等于______________ .
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解题方法
3 . 记不等式组
所表示的平面区域为
,若直线
与
有公共点,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3cd9aa3a00d20ba7fe32f31d33977a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b82c7fc649b5851712800b86ad4459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 对于数列
,若
,都有
成立,则称数列
具有性质
.若数列
的通项公式为
,且具有性质
,则实数a的取值范围是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e286adec936512480531fa3ab27812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9b1c5beed0589b627767cdd7453849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8f69402300f6ed932697689212e91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161b5197bbade732e90d3cdfd16a206d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7281efb424aca4d16a48dcae7b2a9d8.png)
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2016-12-04更新
|
439次组卷
|
4卷引用:2015-2016学年广东省普宁英才华侨中学高二下第二次月考文科数学卷
2015-2016学年广东省普宁英才华侨中学高二下第二次月考文科数学卷2015-2016学年广东省普宁一中高二下学期第二次月考文科数学试卷2020届湖南省长沙市长郡中学高三下学期3月停课不停学阶段性测试数学(理)试题(已下线)第25练 数列的综合应用-2021年高考数学(理)一轮复习小题必刷
5 . 已知实数
,
满足约束条件
,若目标函数
仅在点
取得最小值,则
的取值范围是__________ .
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572710120538112/1572710126600192/STEM/9404eb31f7c34f1d924d879913b66a75.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572710120538112/1572710126600192/STEM/bc9676c1763b44a891750b86ac888d57.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572710120538112/1572710126600192/STEM/c4110a21b24b4337aa85dbe62a6ab17a.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572710120538112/1572710126600192/STEM/9a62264380274cb4aecd11d356c822de.png?resizew=77)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572710120538112/1572710126600192/STEM/2860f852a7c9409a8e47ea2d731fae8d.png?resizew=43)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572710120538112/1572710126600192/STEM/88ddcd1152154df496956a76e9bec688.png?resizew=13)
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6 . 在数列
中,若
为常数
,则
为“等方差数列”,下列是对“等方差数列”的判断;
①
是等方差数列,则
是等差数列;
②
是等方差数列;
③ 若
是等方差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed8c521ba833022d7f57a4d44b2824f.png)
为常数
也是等方差数列;
④ 若
既是等方差数列,又是等差数列,则该数列为常数列.
其中正确命题序号为__________ .(将所有正确的命题序号填在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca1c0c66577dd728e61895ebc96b3ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c806dc9bf2cad0cb20220d23bd252a2f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef891fc99921b6093392c1e3c5347d1.png)
③ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed8c521ba833022d7f57a4d44b2824f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b6a244eab64b41c3f98222feb04855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
④ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
其中正确命题序号为
您最近一年使用:0次
7 . 设变量
满足约束条件
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c29a3f3d078fabcfe99b8b96d711b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6488b9783f8b2583b7da4246a274d4.png)
您最近一年使用:0次
8 . 下列结论中: ①函数
有最大值为
; ②函数
(
)有最大值
; ③若
,则
.正确的序号为________
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/cf646c2a0e7a4cf0ab32e7a9cade3a60.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/364bc7dce63446fcba26ff8ec2db82c4.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/ab4cd1ae26c04b41a8ac52672d7497f3.png?resizew=96)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/584ee0780d8a401ba0b30f955d7cbfa0.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/399c9baee02b4a6493d5921e91410892.png?resizew=56)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/3aab637b42df4f14a26fa3dfa63a8b29.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/3d97a088ff9a4e4eafd5d273d25b49bf.png?resizew=112)
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9 . 若不等式
的解集为
,则![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167391232/STEM/d1bdbd5c3a82462c860b2873f13830e9.png?resizew=27)
_______
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167391232/STEM/960d02cfe3234b2aa9932a37cbda0c43.png?resizew=96)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4573b66a2dbd65dd7eb02c5912eddce8.png)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167391232/STEM/d1bdbd5c3a82462c860b2873f13830e9.png?resizew=27)
您最近一年使用:0次
2016-12-04更新
|
623次组卷
|
2卷引用:2015-2016学年广东省惠来一中、揭东一中高二上期末文科数学试卷
10 . 设二次函数
的值域为
,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf206356b524cd4fa473881fb987d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471ea695f15ed92d2f60582dc612db78.png)
您最近一年使用:0次