20-21高二·全国·课后作业
1 . 观察以下各数列的特点,用适当的数填空,并对每一个数列各写出一个通项公式:
(1)2,4,______,8,10,12;
(2)2,4,______,16,32,______,128,______;
(3)______,4,3,2,1,______,
,______;
(4)______,4,9,16,25,______,49.
(1)2,4,______,8,10,12;
(2)2,4,______,16,32,______,128,______;
(3)______,4,3,2,1,______,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(4)______,4,9,16,25,______,49.
您最近一年使用:0次
2 . 已知不等式
的解集为
,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5896125ec6752f3db768fe54ecf164bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879234adbae93aa72b7e101b3738d4e0.png)
您最近一年使用:0次
3 . 求等差数列5,12,19,26,…,201,208,的各项之和.
您最近一年使用:0次
2023-09-17更新
|
323次组卷
|
2卷引用:人教B版(2019)选择性必修第三册课本例题5.2.2 等差数列的前n项和
4 . 根据以下数列的通项公式,写出对应数列的第2项和第5项:
(1)
;
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30dc346ce95623b17c7bf2735d125327.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff5dd084067c02f084d4e962de7eff7.png)
您最近一年使用:0次
2022高一·全国·专题练习
5 . 重新考查不等式
.这个不等式的左边可分解因式为
.根据实数乘法的符号法则,问题可归结为求一元一次不等式组(1)
和(2)
的两个解集的并集
不等式组(1)的解为
,不等式组(2)无解,从而不等式
的解集为
.
试用上述方法解下面的不等式:
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1efbf762119867ae3b97f31df4a0c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d852cf61a25d86240ce9625b768802f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57168f04622ebb6a69176f02835c6d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11954b8851892690b2548d3507108db.png)
不等式组(1)的解为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debe21e6fbd160fd147eddd2849c96b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1efbf762119867ae3b97f31df4a0c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34656e75013a8d11e63e2c677d1b9aaa.png)
试用上述方法解下面的不等式:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7d1cad89cd84c0cf1f68d4b2ecb43b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30f7934cfaaacbda8d9d035afe63e89.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e720d34ced3d82ad59f3c41e7137470.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e898c180d3aaab86acda33b736a1ce.png)
您最近一年使用:0次
2023-09-14更新
|
165次组卷
|
4卷引用:第3章 不等式 章末题型归纳总结(1)-【帮课堂】(苏教版2019必修第一册)
(已下线)第3章 不等式 章末题型归纳总结(1)-【帮课堂】(苏教版2019必修第一册)苏教版(2019)必修第一册课本习题 习题3.3(已下线)第2章 一元二次函数、方程和不等式(基础、典型、易错、新文化、压轴)分类专项训练-2022-2023学年高一数学考试满分全攻略(人教A版2019必修第一册)【导学案】4.3一元二次不等式的应用课前预习-北师大版2019必修第一册第一章预备知识
23-24高二上·全国·课后作业
6 . 已知
,
是等差数列
的图象上的两点.
(1)求数列
的通项公式;
(2)画出数列
的图象;
(3)判断数列
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8833ba3833480237f47774984958c01d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23937d5fab6196f611e69b9c39008188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)画出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
23-24高二上·全国·课后作业
7 . 已知数列
是等差数列.
(1)如果
,
,求公差d和
;
(2)如果
,
,求公差d和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df1038200f2d97a52c716aab6c3bcb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb334e165679c6cb500c994cffa47147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次
23-24高二上·全国·课后作业
8 . 写出下面数列的前5项:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9579ce08a81ecb76e77c666ade0e4709.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823b2fcd0fbf3ba96d56276e2ae298ac.png)
您最近一年使用:0次
23-24高二上·全国·课后作业
9 . 数列
的通项公式为
,求出它的前4项及第
项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/609c795a6b2c39b9fba2c57638693bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b17a9b9bb8bf6bb9865e37f204da5c5.png)
您最近一年使用:0次
23-24高二上·全国·课后作业
10 . 观察下面数列的变化规律,用适当的数填空,并写出每个数列的一个通项公式.
(1)( ),7,12,( ),22,27,…;
(2)
,
,( ),
,
,
,( ),…;
(3)1,
,( ),2,
,( ),
,…;
(4)
,
,( ),
,….
(1)( ),7,12,( ),22,27,…;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feab93da829a3c07a98ed41b4707967e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6486784415f3537c9a13556c05d893.png)
(3)1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ed98e34b84285163a8b1b45c6fe403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231fd0fbb933002c6a527dcc4f7186f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc577290d0e6ac8d874419ff015a42dc.png)
您最近一年使用:0次