名校
解题方法
1 . 若定义在R上的函数
满足
,
是奇函数,现给出下列4个论断:
①
是周期为4的周期函数;
②
的图象关于点
对称;
③
是偶函数;
④
的图象经过点
;
其中正确论断的个数是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d78dec1c1e00ec02d7bdaf76ef8901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e81e15b871dd32b2438ef8025bcc42d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
其中正确论断的个数是
您最近一年使用:0次
2020-04-09更新
|
1615次组卷
|
5卷引用:2016-2017学年福建省漳州市第一中学高一上学期期末考试数学试卷
2 . 半圆
的直径为
为直径延长线上的一点,
为半圆上任意一点,以
为一边作等边三角形
.则四边形
的面积最大值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2353c7e8ad00d9d25c71535bd45d7568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf218af8f145a57828914df61ce08e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
![](https://img.xkw.com/dksih/QBM/2018/7/26/1996931844202496/2002389960122369/STEM/a3347fa2c8014b04ac66ce1e4f6c5272.png?resizew=152)
您最近一年使用:0次
2018-08-03更新
|
801次组卷
|
2卷引用:福建省福州市第四中学2016-2017学年高二上学期第一学段模块检测数学(理)试题
名校
3 . 数列
中,
,若数列
满足
,则数列
的最大项为第__________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175e92731a24a2c2b763742a8e5db61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabad0eda18463f695894cb30e3d8dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
您最近一年使用:0次
2018-03-18更新
|
939次组卷
|
5卷引用:福建省福州市闽侯第六中学2018届高三上学期期中考试数学(文)试题
福建省福州市闽侯第六中学2018届高三上学期期中考试数学(文)试题山西省太原市2018届高三3月模拟考试(一)数学理试题(已下线)4.2求数列的通项公式与前n项的和[理]-《备战2020年高考精选考点专项突破题集》(已下线)4.2求数列的通项公式与前n项的和[文] -《备战2020年高考精选考点专项突破题集》重庆市万州第三中学2018-2019学年高一下学期期中数学试题
名校
4 . 已知椭圆
上一点
关于原点的对称点为点
为其右焦点,若
,设
,且
,则该椭圆的离心率
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6640bb4ae84c81b1cce121cf072ea00f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c507610f462120218e2cd1894c957eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dd3ddb7bbf69309d4647c3cdbfb8b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bac234188f7572ee8952cda0cb87dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
您最近一年使用:0次
2017-12-26更新
|
1507次组卷
|
9卷引用:福建省莆田市第二十四中学2017-2018学年高二上学期第二次月考(12月)数学(理)试题
福建省莆田市第二十四中学2017-2018学年高二上学期第二次月考(12月)数学(理)试题江西省南康中学2017-2018学年高二下学期第三次月考数学(文)试题【校级联考】河南省信阳高级中学、商丘一高2018-2019学年高二1月联考数学(文)试题湖南省衡阳市第八中学2018-2019学年高二上学期期中数学(理)试题广西南宁市第三中学2020-2021学年高二12月月考数学(文)试题江西省赣州市南康中学2020-2021学年高二上学期第四次大考数学(理)试题陕西省西安市高新第一中学2020-2021学年高一下学期第二次月考数学试题黑龙江省鹤岗市第一中学2021-2022学年高二下学期开学考试数学试题上海市南洋模范中学2023届高三上学期开学考数学试题
5 . 已知函数
,若曲线
在点
,(
,其中
互不相等)处的切线互相平行,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300c3d15b5a2ee39b1e89e5c5e65ea9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9554552f861eb901075f352b2908cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79059a3366ed1b339ba1317ce8a1e7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-11-23更新
|
811次组卷
|
3卷引用:福建省福州市闽侯第六中学2018届高三上学期期中考试数学(文)试题
名校
解题方法
6 . 函数
若
对
恒成立,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18f984976fe08d5984bc88bb877e321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c50e1c5263ee5567069d003d970535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0483fce13ea4399de94ab2a115478858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2017-10-25更新
|
1048次组卷
|
5卷引用:福建省福州市第一中学2018届高三上学期期中考试数学(文)试题
7 . 定义一种向量运算“
”:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
=
(
与
不共线),![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
=
(
与
共线) (
,
是任意的两个向量).对于同一平面内的向量
,
,
,
,给出下列结论:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
;
②
(![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
)=(![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
;
③(
+
)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
;
④若
是单位向量,则|![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
|
|
|+1.
以上结论一定正确 的是________ .(填上所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a8f20036b1e7cfb0800f141d843718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf11da8b4e4e875f165db835d7d193a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a87c03982d3af82c243fe0cca504f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99265b8b6459385e1eba69869b9d061.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f94d0b7c306de587f3a5f77c158c602.png)
③(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a87c03982d3af82c243fe0cca504f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a87c03982d3af82c243fe0cca504f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a87c03982d3af82c243fe0cca504f1.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99265b8b6459385e1eba69869b9d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99265b8b6459385e1eba69869b9d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8536a5ebd76f494c03019086506d8e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
以上结论一定
您最近一年使用:0次
2017-10-21更新
|
962次组卷
|
2卷引用:福建省三明市第一中学2018届高三上学期第一次月考数学(文)试题
名校
8 . 在锐角
中,角
,
,
所对的边长分别为
,
,
,已知
,且
,则
的周长的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4ab58fcdaeec93ce0597924abf57c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2017-10-08更新
|
1357次组卷
|
4卷引用:福建省2017届数学基地校高三毕业班总复习 三角函数 形成性测试A卷(文科)数学试题
名校
9 . 已知函数
与
的图象上存在关于原点对称的点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa3fc30e8ef6ab6f3d33a20bee48d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5aee4034db441cd5389d43721e42ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-08-19更新
|
1615次组卷
|
7卷引用:福建省三明市普通高中2016-2017学年高二下学期期末质量检测文数试题
福建省三明市普通高中2016-2017学年高二下学期期末质量检测文数试题广东省茂名市五大联盟学校2018届高三3月联考数学(文)试题【全国百强校】天津市第一中学2019届高三上学期第一次月考数学(文)试题2天津市第一中学2019届高三一月月考数学试题(一)四川省三台中学实验学校2019-2020学年高二下学期期末适应性考试数学(文)试题(已下线)“8+4+4”小题强化训练(9)导数的综合应用-2022届高考数学一轮复习(江苏等新高考地区专用)北京交通大学附属中学2021-2022学年高二下学期期中练习数学试题
10 . 已知数组:
,
,
,
,
,
记该数组为:
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d6a5e2c610f61680293f3b02fa8241.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96253d6e455786ce536a37d486343cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73395f709b15d17c4c8c922e5b476007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de298e43b26821002748d75862e9109e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247c8f7a4f06d620ac4460023beebcb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54c9f0a048b70f495b5055c48534998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57197c09b4a3218479586438a55acaf.png)
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