已知
是等差数列,
是公比为c的等比数列,
,则数列
的前10项和为__________ ,数列
的前10项和为__________ (用c表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c394d7bd6be49f089aa78d2d4fd0a9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b7108404b9c7ac8e9d91b6100ff690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
19-20高三·北京海淀·开学考试 查看更多[10]
北京市人民大学附属中学2021届高三(上)8月练习数学试题(已下线)专题7.3 等比数列及其前n项和(精练)-2021年新高考数学一轮复习学与练(已下线)专题4.3 等比数列(B卷提升篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教A版,浙江专用)(已下线)专题4.4 数列的求和(B卷提升篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教A版,浙江专用)(已下线)专题5.3 等比数列(B卷提升篇)-2020-2021学年高二数学选择性必修第三册同步单元AB卷(新教材人教B版)(已下线)专题28 数列求和的类型和方法-备战2022年高考数学一轮复习一网打尽之重点难点突破福建省连城县第一中学2022-2023学年高二上学期第一次月考数学试题甘肃省兰州市第五十八中学2022-2023学年高二下学期开学检测数学试题(已下线)专题01 盘点求数列前n项和的五种方法 -1福建省漳州市第三中学2022-2023学年高二上学期期中数学试题
更新时间:2020-09-14 18:33:29
|
相似题推荐
填空题-单空题
|
适中
(0.65)
名校
【推荐1】数列
的前n项和为
,存在常数A,B,C,使得
对任意正整数n都成立,若数列
为等差数列,则3A-B+C的值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76afd2a9ba835b7d8d9097030720cf62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐1】等差数列
的前
项和为
,若前5项和为5,倒数5项和为55,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](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/6a6210ceedb78e4e5974d06b78d23a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
您最近一年使用:0次
【推荐2】已知数列
中,
,
,
是
,
的等差中项,
是其前n项和,若数列
是公差为3的等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fbdd2e3efbef1ff014df55b242eced.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6278d3cc0086c7aab6ac20712c7d0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db471f255defdd23fbc5341e3dc5e91e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fbdd2e3efbef1ff014df55b242eced.png)
您最近一年使用:0次
【推荐1】已知数列
满足
,
,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c88abd936125401c8d7e3bc21f4396.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98fd571f61de05068600bcd487db625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c88abd936125401c8d7e3bc21f4396.png)
您最近一年使用:0次
【推荐2】一个正方形被等分成九个相等的小正方形,将中间的一个小正方形挖掉(如图(1));再将剩余的每个小正方形都分成九个相等的小正方形,并将中间的一个小正方形挖掉得图(2);如此继续下去…….设原正方形的边长为1,则第3个图中共挖掉____ 个正方形,第n个图中所有挖掉的正方形的面积和为_____ .
![](https://img.xkw.com/dksih/QBM/2020/11/24/2599988322377728/2602926278590464/STEM/2d107cee8c454f22b99b7436bd9acd57.png?resizew=282)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】任取一个正整数,若是奇数,就将该数乘3再加上1;若是偶数,就将该数除以2.反复进行上述两种运算,经过有限次步骤后,必进入循环圈
.这就是数学史上著名的“冰雹猜想”(又称“角谷猜想”等).如取正整数
,根据上述运算法则得出
,共需经过8个步骤变成1(简称为8步“雹程”).现给出冰雹猜想的递推关系如下:已知数列
满足:
(m为正整数),
当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4060ead27fba2dac4e8c687949bb7acc.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a16f78ce0dab1ac8fa6abbd70f2b008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3967d620e2fef3ecc724c66e29f68a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73700b5135fc6a9c2d923a27a4c9b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999ac8c1ef39251e07a7fc54cbf7e26e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d30d7735723cbc3a402e75da7a0a123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4060ead27fba2dac4e8c687949bb7acc.png)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
名校
解题方法
【推荐2】对于数列
,令
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9018940318b725158ae598c0c5fc0ea5.png)
__________ ;若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902688e101aa33a1ce5c46f5dfed0d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c1ed7b10ac7ca1cd81cdd39a8fcc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9018940318b725158ae598c0c5fc0ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc917ce312346bb1c99215ea5e75492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
您最近一年使用:0次