2022高一·全国·专题练习
解题方法
1 . 已知函数
,各项均不相等的数列
满足
,
,数列
和
的前
项和分别为
和
,给出下列两个命题:
①若
,则
;
②存在等差数列
,使得
成立.关于上述两个命题,
以上说法正确的是______ .(填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a89aebeb8393a39f62d34c89fdc5654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811308edf40d7e10059f5652f0e65420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292b7800ba829f3f458cd6c23edf68a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66efb7bb8ed08d5b8b1d51e7d4dddb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf3107b2fbe839c67499bf58175a117.png)
②存在等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95603baa4634fa1ef7fe744ff5180586.png)
以上说法正确的是
您最近一年使用:0次
解题方法
2 . 已知
为单调递减的等差数列
的前n项和,若数列
前n项和
,则下列结论中正确的有______ .(填写序号)
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9854d8e0cdc18b0acc44a5786dbff7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58365ff21052f2f978c11844b002b933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c179caa067a39909537e4454e69943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769e691cda5afd33e75ecd2ef21d3e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6df0c55b4ce6c687a05d5dadea34ab.png)
您最近一年使用:0次
名校
解题方法
3 . 将
个数排成
行
列的一个数阵,如图:
![](https://img.xkw.com/dksih/QBM/2021/5/17/2723154565627904/2728929653186560/STEM/6c88f1013ec443198f92cf5acd8bf705.png?resizew=200)
该数阵第一列的
个数从上到下构成以
为公差的等差数列,每一行的
个数从左到右构成以
为公比的等比数列(其中
).已知
,
,记这
个数的和为
.给出下列结论:
①
;
②
;
③
;
④
.
其中结论正确的是______ .(填写所有正确答案的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2021/5/17/2723154565627904/2728929653186560/STEM/6c88f1013ec443198f92cf5acd8bf705.png?resizew=200)
该数阵第一列的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c20bc8da04fbb4bfea4e412274dde2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b73ec6f2aef5440b1b689fe74a8da96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9f9fa5a74a471d784caf42fa662a6b.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0367f5f840bf6ad1c1dc94049a326e26.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ee24cb4787a625ef896018298b3a22.png)
其中结论正确的是
您最近一年使用:0次
2021-05-25更新
|
523次组卷
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5卷引用:湖北省黄冈市团风中学2021届高三下学期5月适应性考试一数学试题
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