1 . (1)若数列
的通项公式为
,则该数列中的最小项的值为__________ .
(2)若
的展开式中含有常数项,则n的最小值等于__________ .
(3)如图所示的数阵中,用
表示第m行的第n个数,则以此规律
为__________ .
(4)
的内角A、B、C所对的边分别为a、b、c.已知
,且
,有下列结论:①
;②
;③
,
时,
的面积为
;④当
时,
为钝角三角形.其中正确的是__________
填写所有正确结论的编号
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22363774130b5db04c49b36bc4d58001.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bbdb3fc9614438947c7f1537ec64765.png)
(3)如图所示的数阵中,用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66c5f00b5b38a2d052354b5611970e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a9aa3e38f912969450d2a1fe5ffcae.png)
![](https://img.xkw.com/dksih/QBM/2022/3/8/2931802799407104/2938048186130432/STEM/b7d18d9015bb45d3a6959a5b0edfd3df.png?resizew=208)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a37dbc8484f51a3d2a25a509838d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e7984a935eb4ac5730ccea966af4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18dccba7bc301e4913b1a4856afae466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d697d914ec99d6edb5a6ab7efe1c5686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15a13b4190ac3d5feaee27a4c97b21b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adac343f5a716a1959eb0abbcdac0bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530be0354ac54e554421d9c82e5070e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58303bdbbdf9b78308135ee1ed413d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
您最近一年使用:0次
2022-03-17更新
|
1402次组卷
|
4卷引用:江苏省无锡市2022届高三下学期3月模拟数学试题
江苏省无锡市2022届高三下学期3月模拟数学试题湖北省武汉市武昌区2022届高三下学期3月模拟数学试题(已下线)考点25 二项式定理及其应用(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)(已下线)考点09 解三角形-1-(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)
名校
解题方法
2 . 已知
的前
项是首项为
,公比为
的等比数列,当
时,
.若数列
中的项满足
,则
的前
项和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987eb2db556e031e96ad710a0dd874e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbcd23a8020d731bd512bb8df45ea594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e174e4e2033a3ec215418dfa265e1b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9988dd4ce024f3f4ddc72618487674f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1834490aacbee800ed5721312f4be1.png)
您最近一年使用:0次
2021-06-20更新
|
540次组卷
|
3卷引用:4.3.3 等比数列的前n项和(1)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
(已下线)4.3.3 等比数列的前n项和(1)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)河南省正阳县高级中学2021届高三下学期第五次素质检测数学(理)试题河南省济源市第一中学2022-2023学年高二下学期开学实验班数学试题
解题方法
3 . 设
是等比数列,
,公比
,
为
的前n项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
___________________ ,记
,设
为数列
的最大项,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5383c68b875f1647217e7893d36eeed3.png)
___________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7c122a41351fe489de5d3aed64368a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfd6363da2712e49c7a37e5d741e03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7c122a41351fe489de5d3aed64368a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea07a2d6990f941b73aa722aeed763d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fd0abf6be394ecb5d7962811e377a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09b1397026ef8f4a2762b896e4ba2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5383c68b875f1647217e7893d36eeed3.png)
您最近一年使用:0次
4 . 在数列
中,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9255e0f18ad71262ff52ce70698789e9.png)
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ ,
对所有
恒成立,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9255e0f18ad71262ff52ce70698789e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fc82353331abee0828dee9b38c08f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a1537da32db2c5b994fc3fc54ca507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-08-02更新
|
778次组卷
|
5卷引用:江苏省泰州中学2021-2022学年高三上学期期初检测数学试题
江苏省泰州中学2021-2022学年高三上学期期初检测数学试题江苏省镇江市扬中市第二高级中学2023-2024学年高二上学期期末模拟数学试题(二)浙江省宁波市效实中学2020届高三下学期6月高考模拟数学试题(已下线)专题09 不等式恒成立问题-2020年高考数学母题题源全揭秘(浙江专版)(已下线)专题10 数列通项公式的求法 微点3 累乘法
5 . 数列
中,
,
,设
的前
项和为
,若
恒成立,则实数
的取值范围是_______ .
![](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/9e11d84a71686455539fa7f15b3bbd91.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/ae4fa3533a847bd47941aa8ed147ca4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-05-13更新
|
864次组卷
|
4卷引用:2020届江苏省扬州市高三下学期5月调研测试数学试题
2020届江苏省扬州市高三下学期5月调研测试数学试题江苏省扬州市2020届高三(5月份)高考数学模拟试题(已下线)专题08 《数列》中的恒成立问题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)(已下线)专题9 周期数列 微点1 周期数列的定义、性质和判定方法
6 . 记数列
的前
项和为
,已知
,且
.若
,则实数
的取值范围为________ .
![](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/b0a1fb967a0c409b74fda31759961a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1928c254cfada1f75a5cd1e34db5a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c695a6d7244c2fa609432ed5f51d0ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
7 . 已知数列
中,
,
,
,若对任意的正整数
及
,不等式
总成立,则实数
的取值范围为______ .
![](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/482a465ab85a8fa0ceb42eca5c7a65c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9563c44af5c0eb9ced0959f2d5921c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d366f67f45812281fb8817fa53bdaa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
名校
解题方法
8 . 在数列
中,
,
,若
,则
的前
项和取得最大值时
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996073497848d3338263739b76a7d293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bb2abc884490eeb3eca7d77b764ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024adc9d8de69e7b79d8be88ce2020c0.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/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2019-05-07更新
|
2490次组卷
|
7卷引用:江苏省扬州市广陵区扬州市新华中学2019-2020学年高二10月月考数学试题
名校
9 . 若无穷数列
满足:
,当
,
时.
(其中
表示
,
,…,
中的最大项),有以下结论:
①若数列
是常数列,则
;
②若数列
是公差
的等差数列,则
;
③若数列
是公比为
的等比数列,则
;
④若存在正整数
,对任意
,都有
,则
是数列
的最大项.
则其中正确的结论是_____ (写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3068733ef2ceda9f1620d5c9bcdfa542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333c77d78bdd083d1f8b7f010d05b740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37715f49f9302c190225c4fe7bbd47ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7230de53663c75658c58bbf206a0085.png)
①若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c60de05900c8d51f2cf77e5e496d93e.png)
②若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8bbb4a09e0ac86bbae46222a90841.png)
③若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
④若存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2b94cbf8f1acc77ed2618d9ba5756a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
则其中正确的结论是
您最近一年使用:0次
2019-04-18更新
|
1211次组卷
|
5卷引用:【校级联考】江苏省泰州中学等2019届高三第二学期联合调研测试数学试题
【校级联考】江苏省泰州中学等2019届高三第二学期联合调研测试数学试题江苏省泰州中学、宜兴中学等校2019届高三4月联考数学试题(含附加题)【校级联考】江苏省高三泰州中学、宜兴中学、梁丰2019届高三第二学期联合调研测试数学试题(已下线)2019年上海市闵行区高三上学期期末质量调研数学试题(已下线)专题6.5 数列的综合应用(练)【理】-《2020年高考一轮复习讲练测》
名校
解题方法
10 . 已知数列
的前
项和为
,对任意的
,
且
恒成立,则实数
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afb8aa768a6f76c0c94d9f83263f9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad848b693feb0cdf7f28f0117d3adc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2017-02-08更新
|
1356次组卷
|
11卷引用:江苏省盐城市响水中学2022届高三下学期3月学情分析(二)数学试题
江苏省盐城市响水中学2022届高三下学期3月学情分析(二)数学试题2016届上海市行知中学高三第一次月考数学试卷2017届湖北省部分重点中学届高三理联考一数学试卷2016届上海市闵行区高三上学期期末质量调研考试(一模)(理)数学试题上海市大同中学2017-2018学年高二上学期10月月考数学试题2016届上海市闵行区高考一模(理科)数学试题黑龙江省农垦建三江管理局第一高级中学2020-2021学年高三上学期期中考试 数学(理)试题(已下线)上海市华东师范大学第二附属中学2021-2022学年高二下学期3月月考数学试题湖南省长沙市长郡中学2023届高三上学期第三次月考数学试题(已下线)4.3数列的概念与性质(第1课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020选择性必修第一册)湖南省怀化市湖天中学2022-2023学年高三上学期11月月考数学试题