名校
解题方法
1 . 已知数列
的前
项和
,
等差数列,且
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)令
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a25ff86d030aefcd645d64e8ccfeae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3606f02bb1a97dc58645681f81570a.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(Ⅱ)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd042441d567621295640ca10a1b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2 . 已知关于
的不等式
的解集是
或
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c64aadb3f6c4fd734de4a50ec93347d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0b89d4bf0920a1437d3328a7398093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890d6dafa253b76e17c37f607ad29a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.0 | B.1 | C.-1 | D.-2 |
您最近一年使用:0次
名校
解题方法
3 . 已知点
满足
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91f449464fa007f536868ac4aeb144c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
您最近一年使用:0次
名校
4 . 我市高中数学研究会准备从会员中选拔
名男生,
名女生组成一个小组去参加数学文化知识竞赛,若
满足约束条件
,则该小组最多选拔学生( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affebea6ab26780fc7489cf28301709c.png)
A.21名 | B.16名 | C.13名 | D.11名 |
您最近一年使用:0次
2020-03-12更新
|
99次组卷
|
4卷引用:2020届四川省乐山市高三第一次调查研究考试文数试题
11-12高一下·四川乐山·阶段练习
名校
5 . 一支车队有
辆车,某天依次出发执行运输任务.第一辆车于下午
时出发,第二辆车于下午
时
分出发,第三辆车于下午
时
分出发,以此类推.假设所有的司机都连续开车,并都在下午
时停下来休息.
(1)到下午
时,最后一辆车行驶了多长时间?
(2)如果每辆车的行驶速度都是
,这个车队当天一共行驶了多少
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
(1)到下午
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
(2)如果每辆车的行驶速度都是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70a54d58b33ff111d396d8ce2085fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.png)
您最近一年使用:0次
2016-12-01更新
|
1123次组卷
|
5卷引用:2011-2012学年四川省乐山一中高一下学期第二阶段数学试卷