1 . 如图,正方形
的边长为1,记其面积为
,取其四边的中点
,
,
,
,作第二个正方形
,记其面积为
,然后再取正方形
各边的中点
,
,
,
,作第三个正方形
,记其面积为
,如果这个作图过程一直继续下去,记这些正方形的面积之和
,则面积之和
将无限接近于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/cfd54d73-9e0a-4922-92c8-fc5ad6c08e4f.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf350a619ef25d8d9b988f3db804e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf350a619ef25d8d9b988f3db804e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2857fac4963b129d99e79dcb3e13d295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8ce8c07e34224e2d25130ed27c9a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c266cba73c7b8ad86e52aa34892e2239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e552a84c071b0f1c7f550367f0c86008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/cfd54d73-9e0a-4922-92c8-fc5ad6c08e4f.png?resizew=162)
A.![]() | B.2 | C.![]() | D.4 |
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2023-11-25更新
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309次组卷
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5卷引用:河南省周口市项城市5校2024届高三上学期11月联考数学试题
河南省周口市项城市5校2024届高三上学期11月联考数学试题河北省保定市唐县第一中学2024届高三上学期期中数学试题河南省金科新未来2023-2024学年高三上学期11月联考数学试题(已下线)4.3.2 等比数列的前n项和公式(分层练习)-2023-2024学年高二数学同步精品课堂(人教A版2019选择性必修第二册)(已下线)5.4数列的应用(分层练习,8大题型)-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第三册)
名校
解题方法
2 . 有下列命题:
①不等式
的解集为
;
②对于实数
,
,
,若
,则
;
③对于实数
,
,
,若
,则
;
④若
,函数
的最小值是
;
⑤当
时,不等式
恒成立,则
的取值范围
;
其中真命题的序号为__ .
(把所有正确答案的序号填写在横线上)
①不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5d21732d8a22de752d615b46867f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee57417245352ff37564703524651589.png)
②对于实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b9d08cf536bbb76bce1b0f135772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
③对于实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5842f47b99932df68efbb64eb847e956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411100df59e7a9dc8d4ad77d497b6fa9.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647e17f9be50dcaba45fa6b15d5d982a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
⑤当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e38f9e9352a21f83b2c1e8f15f95593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1a65d88f9823d49da8f3b96ea9ec6f.png)
其中真命题的序号为
(把所有正确答案的序号填写在横线上)
您最近一年使用:0次
名校
3 . 设
,
,则M,N之间的大小关系为M_____________ N.(填写“>”或“=”或“<”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1073fabd22a8271f74e177c1e8242e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8046cdffb9d45e3b5b116a65e736807.png)
您最近一年使用:0次
2022-10-16更新
|
386次组卷
|
5卷引用:广东省深圳市光明区高级中学2022-2023学年高一上学期10月月考数学试题
名校
4 . 有一个解三角形的题因纸张破损有一个条件不清,具体如下:“在
中,角
,
,
所对的边分别为
,
,
.已知
,
,______,求角
.”经推断破损处的条件为三角形一边的长度,且答案提示
.在同学的相互讨论中,甲同学认为应该填写的条件为:“
”;乙同学认为应该填写条件为“
”,则下列判断正确的是( )
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810a2cc3f61a961c1196fbd0e11caabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71812e0762c0aaffb51cfef66156567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5979a3390272327a96828aa214ed4b6.png)
A.甲正确,乙不正确 | B.甲不正确,乙正确 |
C.甲、乙都正确 | D.甲、乙都不正确 |
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解题方法
5 . 一般认为,民用住宅的窗户面积必须小于地板面积,但窗户面积与地板面积的比应不小于10%,而且这个比值越大,采光效果越好.若一所公寓窗户面积与地板面积的总和为220
,则这所公寓的地板面积至多为___________ 平方米;若同时增加相同的窗户面积和地板面积,公寓的采光效果是______________ (填写“变好了”或者“变坏了”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
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6 . 下列命题中为真命题的是________ .(填写序号)
①若
,则
;②若
,则
;③若
且
,则
;④若
且
.则
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b9d08cf536bbb76bce1b0f135772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2ca67148f90890830b769c6a92c0be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75807858b7804a1ad2039c41f323a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7859a7c3904dc2985f4776fa63f9fea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8201ff29a2091d40eee10db6bbc1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ed37ee7432002cd0e0978b2012e184.png)
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2021-11-10更新
|
126次组卷
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2卷引用:天津市河北区2021-2022学年高一上学期期中数学试题
7 . 在①
,
,②
,
, ③
,
这三个条件中任选一个,补充在下面问题中并作答.已知等差数列
的前
项和为
且_________.(填写序号)
(1)求数列
的通项公式;
(2)设
,求证数列
的前
项和
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233ede8e2b7ddd6807e67d974b7370ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635677a66839e23a81fbc2a06b6e8312.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19181548bcfbfe7a38a2c84096199563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f8d9491c128591de76464d56a3ac1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6413cb2081b5c1339af033856dd82c.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)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75661dab07707f36d37c50e2f6ca9693.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/a54fbf9c064d2259638f751e77686269.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2021-09-11更新
|
1378次组卷
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9卷引用:山西省运城市新康国际实验学校2020-2021学年高二下学期4月测试数学(文)试题
山西省运城市新康国际实验学校2020-2021学年高二下学期4月测试数学(文)试题新疆喀什地区岳普湖县2022届高三第一次模拟考试数学(文)试题(已下线)第03讲 等差数列的前n项和公式-【帮课堂】2021-2022学年高二数学同步精品讲义(人教A版2019选择性必修第二册)云南省昆明市第一中学2021-2022学年高二下学期期中考试数学试题广西贵港市2022届高三5月教学质量检测(四模)数学(文)试题广西南宁市第三中学2022届高三下学期一模数学(文)试题广西南宁市第三中学2022届高三下学期一模数学(理)试题广西贵港市2022届高三5月教学质量检测(四模)数学(理)试题云南省德宏州民族第一中学2023-2024学年高二下学期期中考试数学试题
名校
8 . 给定下列命题:
;
;
;
;
.其中错误的命题是______
填写相应序号
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871b79d04683c88f3fbe4b9b46b1b5c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fde76091abe7b21ed5890990c2ad72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d23ab72882d70f32c92bb351e3e2b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63fdbf65d88cec81df4449fc9b98642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2ba0209305ec0dce17e384195b7369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
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2019-12-18更新
|
443次组卷
|
4卷引用:天津市静海区四校2019-2020学年高一上学期11月联考数学试题
天津市静海区四校2019-2020学年高一上学期11月联考数学试题(已下线)2.1等式性质与不等式性质-【新教材】人教A版(2019)高中数学必修第一册限时作业吉林省长春市第七中学2020-2021学年高一上学期第一次月考数学试题天津市静海区瀛海学校2020-2021学年高一上学期11月月考数学试题
9 . 若等比数列
的前
项和为
,已知
,
成等差数列,则数列
的公比为__________ .(用数字填写)
![](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/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d800232ed782cdc72e45c679be7a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2019-03-08更新
|
504次组卷
|
2卷引用:天津市红桥区2018-2019学年高二上学期期末数学试题
名校
10 . 已知
表示实数
,
,
中最大的数,例如
,若函数
.
(1)写出函数
的解析式,画出它的图象;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749c45521309ed059607c75ee9b4bc26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12aab48f42013368c3980c0566af221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2333a55053e82622a94a9ba113308bf9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/de7d72a5-2d07-40b7-be42-b74f74cea4c8.png?resizew=164)
(1)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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