1 . 设数列
的前
项和为
,若
,则
( )
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07750d4600f17aeddde44866d10893af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af1f1b7e9e20d799ee3c06b89a0611c.png)
A.0 | B.-2 | C.4 | D.2 |
您最近一年使用:0次
2 . 已知数列
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac326f9f4ad78d0053c113f823ea6d60.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c8f540a82e89133cbbb1d3e4db9a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac326f9f4ad78d0053c113f823ea6d60.png)
您最近一年使用:0次
2021-10-23更新
|
277次组卷
|
3卷引用:北师大版(2019) 选修第二册 名师精选 测试一 学业水平综合性测试卷
北师大版(2019) 选修第二册 名师精选 测试一 学业水平综合性测试卷人教B版(2019) 选修第三册 名师精选 学业水平综合性测试卷(已下线)卷17 选择性必修第二册综合性测试卷 A卷 ·基础达标 -【重难点突破】2021-2022学年高二数学名校好题汇编同步测试卷(人教A版选择性必修第二册)
名校
解题方法
3 . 已知“
”表示一种运算,定义如下关系:①
;②
,
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd94e5c210921dfbe11796b1fc97cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35787cbf16ac6d38d71daa0a0b130d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968be0866abf0b58ef9f37e1b8b9db98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096dd155336d8698ee659ca2ac5093c7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 数列
的前2019项的和是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73494c2fa9694b106793d29a51e703f.png)
A.-2019 | B.-1010 | C.1010 | D.2019 |
您最近一年使用:0次
2020-02-27更新
|
752次组卷
|
3卷引用:2018级山东师大附中第五次学分认定考试数学试题
2018级山东师大附中第五次学分认定考试数学试题山东省济南市市中区实验中学2019-2020学年高二上学期期中数学试题(已下线)突破4.1 数列的概念课时训练-【新教材优创】突破满分数学之2020-2021学年高二数学课时训练(人教A版2019选择性必修第二册)
5 . 设数列
的前
项和为
,若
,则
( )
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb6c16589eb93725fa7ae546f15d243a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.3 | B.2 | C.1 | D.0 |
您最近一年使用:0次
6 . 如图,将数列
依次从左到右,从上到下排成三角形数阵,其中第
行有
个数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/f0fcbd0b-031e-4a00-a85e-b021a5c829c2.png?resizew=184)
(1)求第5行的第2个数;
(2)问数32在第几行第几个;
(3)记第
行的第
个数为
(如
表示第3行第2个数,即
),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c897ddb7d9a731a8274319ac7ab4f4.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/editorImg/2022/11/26/f0fcbd0b-031e-4a00-a85e-b021a5c829c2.png?resizew=184)
(1)求第5行的第2个数;
(2)问数32在第几行第几个;
(3)记第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba1bbe411bc71bca016d3fd82352f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2b2d903cfd3507b7247e98716faf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d65591e3c0858f28b2b8a84fb5a50e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2702664ec1310b527e1c0501c19886.png)
您最近一年使用:0次
名校
7 . 在数列
中,已知
.若
是
的个位数字,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696fdf0c87b8c67c284efe4ef619c6f6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbfe9cbf54b82384301dbbf69289c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39222f0687c9124bddb35544bcc7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bae11b31f657478e97646895a289e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696fdf0c87b8c67c284efe4ef619c6f6.png)
您最近一年使用:0次
2018-03-25更新
|
785次组卷
|
3卷引用:2019年浙江省普通高中学业水平名校模拟卷(六)