名校
1 . 在
中,
,
,
是
边上的一点,
,若
为锐角,
的面积为4,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5cd6ce30ac70cd343334139c1a478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025df2a9934b457cf20d91604e430612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
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名校
2 . 已知公差不为0的等差数列{an}满足a3=9,a2是a1,a7的等比中项.
(1)求{an}的通项公式;
(2)设数列{bn}满足
,求{bn}的前n项和Sn.
(1)求{an}的通项公式;
(2)设数列{bn}满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78acfd3147baa3b112f7e267480693a.png)
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2020-04-08更新
|
326次组卷
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10卷引用:【市级联考】湖南省永州市2019届高三上学期第二次模拟考试数学(文)试题
【市级联考】湖南省永州市2019届高三上学期第二次模拟考试数学(文)试题吉林省实验中学2018-2019学年高一下学期期末考试数学(理)试题2020届闽粤赣高三下学期三省十二校联考数学理科试题陕西省西安市第一中学2020-2021学年高三上学期第五次模拟考试数学(文)试题内蒙古自治区莫力达瓦达斡尔族自治旗尼尔基第一中学2021-2022学年高三上学期期末理科数学试题福建省厦门一中2019-2020学年高一3月线上月考数学试题江苏省扬州市第一中学2020-2021学年高二上学期教学质量调研评估(1)数学试题广东省广州市第九十七中学2022-2023学年高二上学期期末数学试题四川省达州市宣汉中学2022-2023学年高二下学期入学考试文科数学试题云南省红河哈尼族彝族自治州蒙自市第一高级中学2023-2024学年高二下学期5月期中数学试题
3 . 已知幂函数
的图象过点
,令
,
,记数列
的前
项和为
,则
时,
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081cd41dab0f2a8f84b0e9f1df4843fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc33497c7c3b9c7c2126f46ca726995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.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/634f439d13a208bbefdd8982c29655dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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4 . 若无穷数列
满足:
,且对任意的
,
(
,
,
,
)都有
,则称数列
为“G”数列.
(1)已知等比数列
的通项为
,证明:
是“G”数列;
(2)记数列
的前n项和为
且有
,若对每一个
取
,
中的较小者组成新的数列
,若数列
为“G”数列,求实数
的取值范围?
(3)若数列
是“G”数列,且数列
的前n项之积
满足
,求证:数列
是等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbdd24dce823a0e921fc0ea73c52b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36faaf0cdd635dd7d62bfd2f64521ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65580e670b8b60c603903641609bdb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f876a31e4896602ebfdba03b6912083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)已知等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4b5779873cb3f4366dbfdb983dec81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1472f897dae579374ca56b12b2a100a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2aa78c96db411c9e1e939ae16de78d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c14a54836a80f5557e5590252764c189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05cf9c31c6623a7f15718ab7d9f3365b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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解题方法
5 . 若
,(
,
)则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63385d0477af25e76d01b74e94b7f52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b38666a7f554b6f65bf20f725af2d8.png)
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6 . 若
表示不超过
的最大整数(如
,
,
),已知
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fab6009ffb15a88bd843a1c2b8d7770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cef814b001f3306f78e3f18abc5164c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd91692bd3fd4c54b75b9edcf3c70ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d45f0752d39126b517a9e0eec7697cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90e54d0e4badb3a567667d630e03aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bedf55d88e2cefb2d8b53f49a0db91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3941c1809cb09e8fdc698453d34117c.png)
A.2 | B.5 | C.7 | D.8 |
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2020-04-06更新
|
1585次组卷
|
8卷引用:浙江省之江教育评价联盟2019-2020学年高三第二次联考数学试题
浙江省之江教育评价联盟2019-2020学年高三第二次联考数学试题2019届浙江省宁波市高三下学期4月二模数学试题2019届宁波市高三高考模拟考试数学试题(已下线)专题13 数列的性质应用-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(浙江专版)(已下线)专题23 数列的基本知识与概念 -1山西省吕梁市孝义市2023届高三上学期期末模拟数学试题(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(已下线)第1讲 数列的基本知识与概念5种题型(1)
解题方法
7 . 已知函数
的定义域为
,且满足
,当
时,有
,且
.
(1)求不等式
的解集;
(2)对任意
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6521ef75f0a05fe62cdfd2fbbe0430b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c165baced95d7095d9f918a9cc110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4ed4485745f1d259a3953c242b9cf2.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f48fd639616cdb1f927d3641297361.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450fe3dfd82db4e756924653b0047aec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-04-06更新
|
1145次组卷
|
4卷引用:2020届百校联盟TOP300八月尖子生联考(全国II卷)文科数学试题
解题方法
8 . 在
中,角
,
,
所对的边分别边
,且
,设角
的角平分线交
于点
,则
的值最小时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07943aba85bf1d3275e5c91dbb28620.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb90cc59c2128b85201dffe42cab8121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07943aba85bf1d3275e5c91dbb28620.png)
您最近一年使用:0次
2020-04-06更新
|
873次组卷
|
2卷引用:2020届百校联盟TOP300八月尖子生联考理科数学(全国II卷)试题
解题方法
9 .
的内角
的对边分别为
,且
,若
的周长的最大值为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa7e6b2daad2af88ea5245430dc2ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388590e0f8d9dfeaf2b65f80648257d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2020-04-06更新
|
321次组卷
|
3卷引用:2019届百校联盟TOP20三月联考(全国II卷)理科数学试题
10 . 已知自变量为
的函数
的极大值点为
,
,
为自然对数的底数.
(1)若
,证明:
有且仅有2个零点;
(2)若
,
,
,…,
为任意正实数,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ebf4c17b202775fe01e636b7af53f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bed5ae0ef5a419eb9c721997ef5a227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75beac05ff31987303d0994a3a088162.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0a7893c0f8021db423fc47d19c143c.png)
您最近一年使用:0次