1 . 已知
满足条件
则点
到点
的距离的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3749e05c625ba5869b0429d91fcf62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
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名校
2 . 若变量
满足约束条件
,且
的最大值和最小值分别为
和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5f808b9e66376664255985b521e594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4489516aca67a6afe53fac2f1477f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
A.-2 | B.-1 | C.0 | D.1 |
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2017-04-14更新
|
960次组卷
|
4卷引用:2019届安徽省六校教育研究会高三上学期第一次素质测试文科数学试题
2019届安徽省六校教育研究会高三上学期第一次素质测试文科数学试题2017届湖北省六校联合体高三4月联考数学(文)试卷吉林省吉林市吉化一中2019-2020学年高一下学期期末(文科)数学试题(已下线)押第4题线性规划-备战2021年高考数学临考题号押题(浙江专用)
3 . 在我国明代数学家吴敬所著的《九章算术比类大全》中,有一道数学名题叫“宝塔装灯”,内容为“远望巍巍塔七层,红灯点点倍加增;共灯三百八十一,请问顶层几盏灯? ”( ) (加增的顺序为从塔顶到塔底).
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知等差数列
的前
项和为
,且满足
,
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.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/57964a9b6a7c4a9bad33c4316407c24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9dc08571a7c9a77dc85cad5b578942.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24308e3783eb7fc07d3e3bd1d9a9a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2017-03-03更新
|
1446次组卷
|
2卷引用:2017届安徽省合肥市高三第一次模拟考试数学(理)试卷3
5 . 已知
为等差数列,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7fc93319e29f10e7e5f096d9c85341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2017-02-16更新
|
626次组卷
|
2卷引用:2017届安徽淮北一中高三理上学期四模数学试卷
6 . 若实数
满足
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f500d6254aece5343b4753409a34b03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fc838e1477179b36ca7481ee2cc1e8.png)
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7 . 已知
的大小关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bffd21ed554388b055bc8957a81032a.png)
A.a<c<b | B.b<a<e | C.c<a<b | D.a<b<c |
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2016-12-03更新
|
372次组卷
|
2卷引用:2016届安徽省示范高中高三第二次联考理科数学试卷
2012·安徽滁州·一模
8 . 已知实数
满足不等式组
那么目标函数
的最大值是_______ .
![](https://img.xkw.com/dksih/QBM/2014/8/21/1571841709858816/1571841715257344/STEM/bb65a8251d8046a58ca6fa09afe44d02.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2014/8/21/1571841709858816/1571841715257344/STEM/62aafbd1c5fc42bb810a21240c6705b2.png?resizew=72)
![](https://img.xkw.com/dksih/QBM/2014/8/21/1571841709858816/1571841715257344/STEM/87bfb7124be24924a035ff3fc78377d3.png?resizew=68)
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名校
解题方法
9 . 已知等差数列
中,已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75996e983aa29398321796699a658bc.png)
________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e08f666576599211317e13c51260ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75996e983aa29398321796699a658bc.png)
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2013·安徽宿州·三模
10 . 若a、b、c、d均为实数,使不等式
都成立的一组值(a、b、c、d)是_______ (只要写出适合条件的一组值即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c5439d459a5373e2fd38d4c2290bfc.png)
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