名校
解题方法
1 . 已知定义在
上的奇函数
满足
,当
时,
,则方程
在区间
上所有的实数解之和为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3166b78ad610c0da40647214c1447e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d114392f77e9c74de9bcc247e5bdd13c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6201963fcdd54887f2af50518bd908a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128ec62300dcb28344f100d2be408b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3a9f8a2de5a9ffdb5268b342f385f6.png)
您最近一年使用:0次
2019-10-30更新
|
1094次组卷
|
4卷引用:2020届江苏省淮安市新淮高级中学高三下学期5月调研数学试题
2020届江苏省淮安市新淮高级中学高三下学期5月调研数学试题山东省山东师范大学附中2019-2020学年高三上学期10月月考数学试题重庆市云阳江口中学2020届高三上学期第一次月考数学(理)试题(已下线)数学-6月大数据精选模拟卷01(江苏卷)(满分冲刺篇)
解题方法
2 . 已知正项数列
中,
,点
在抛物线
上.数列
中,点
在经过点
,以
为方向向量的直线
上.
(1)求数列
,
的通项公式;
(2)若
,问是否存在
,使得
成立?若存在,求出
的值;若不存在,说明理由;
(3)对任意的正整数
,不等式
成立,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecf69901899bba130968c7a091790d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf7eb772b165b1c177194e6a17f69703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2137d0ad340dda7b31c27b7b405a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda02708ee93535e876a7f2f84cf0c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea31d15dbe58e36a38b1a3806a85bdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866196a7b4b6d213b5f8da009db1e6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f280f19c3bc6e4b98d402427c7ebe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)对任意的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14cdd0253fbecdd98411476d3f6ef4f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-05-25更新
|
356次组卷
|
4卷引用:2020届江苏省淮安市新淮高级中学高三下学期5月调研数学试题
2020届江苏省淮安市新淮高级中学高三下学期5月调研数学试题2015届浙江省嘉兴市桐乡一中高三新高考单科综合调研三理科数学试卷(已下线)4.3 数列-数列的概念(十二大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)专题05 数列在高中数学其他模块的应用(九大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
3 . 一条宽为
的两平行河岸有村庄
和供电站
,村庄
与
的直线距离都是
,
与河岸垂直,垂足为
现要修建电缆,从供电站
向村庄
供电.修建地下电缆、水下电缆的费用分别是
万元
、
万元
.
![](https://img.xkw.com/dksih/QBM/2017/10/12/1793707435335680/1794492835864576/STEM/65286784d7b04fb2a781022d33dc733c.png?resizew=178)
![](https://img.xkw.com/dksih/QBM/2017/10/12/1793707435335680/1794492835864576/STEM/38807467da34463dafd1cbd5c3ee1bc5.png?resizew=178)
(1) 如图①,已知村庄
与
原来铺设有电缆
,现先从
处修建最短水下电缆到达对岸后后,再修建地下电缆接入原电缆供电,试求该方案总施工费用的最小值;
(2) 如图②,点
在线段
上,且铺设电缆的线路为
.若
,试用
表示出总施工费用
(万元)的解析式,并求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e4917c34a4c4e654ace35eb65f179b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c8c06a25919f792ef362f20d8ca8f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1feb40df85e8deb28601e2bfec896f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1feb40df85e8deb28601e2bfec896f.png)
![](https://img.xkw.com/dksih/QBM/2017/10/12/1793707435335680/1794492835864576/STEM/65286784d7b04fb2a781022d33dc733c.png?resizew=178)
![](https://img.xkw.com/dksih/QBM/2017/10/12/1793707435335680/1794492835864576/STEM/38807467da34463dafd1cbd5c3ee1bc5.png?resizew=178)
(1) 如图①,已知村庄
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2) 如图②,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e782bff19ca086deede755dbe65045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e3bbe9c046f2070aed6d2dec7b15a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2017-10-13更新
|
386次组卷
|
3卷引用:江苏省淮安市盱眙中学2018届高三第一次学情调研测试数学试卷(文)
江苏省淮安市盱眙中学2018届高三第一次学情调研测试数学试卷(文)(已下线)2018高三二轮复习之讲练测之测案【苏教版数学】专题二函数与导数安徽省滁州市定远县育才学校2020-2021学年高三上学期第一次月考数学(文)试题
4 . 已知函数
的图象与函数
的图象有四个交点,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5c560b3922ff288c569484b01669fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e306ffbbbd7dc567eeeb75d10ca08a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2011·江苏南京·模拟预测
5 . 选修45:不等式选讲
已知a、b、c是正实数,求证:++≥++.
已知a、b、c是正实数,求证:++≥++.
您最近一年使用:0次
名校
6 . 如图,在平面直角坐标系中,已知A、B、C是椭圆
上不同的三点,
,C在第三象限,线段BC的中点在直线OA上.
(1)求椭圆的标准方程;
(2)求点C的坐标;
(3)设动点P在椭圆上(异于点A、B、C)且直线PB, PC分别交直线OA于M、N两点,证明
为定值并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c380df5fc37bbf25ff2b5ad890675c.png)
(1)求椭圆的标准方程;
(2)求点C的坐标;
(3)设动点P在椭圆上(异于点A、B、C)且直线PB, PC分别交直线OA于M、N两点,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c58625fd2a35ef8883b60af16bf8926.png)
![](https://img.xkw.com/dksih/QBM/2017/6/1/1699556795555840/1700197770387456/STEM/79e19bdac4924b9da629aa7a86b0742d.png?resizew=233)
您最近一年使用:0次
2017-06-02更新
|
836次组卷
|
2卷引用:江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(文)试题
名校
7 . 已知数列
和
满足
若
为等比数列,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ded7ee081aeecdd892d0b353d14e9e9.png)
(1)求
和
;
(2)设
,记数列
的前
项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①求
;
②求正整数 k,使得对任意
均有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c375003a093fa3e859522c0c75a3836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ded7ee081aeecdd892d0b353d14e9e9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3a926dda4f15cc423a210fa5be25a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
②求正整数 k,使得对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2aa78c96db411c9e1e939ae16de78d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdff6afe994a994d539286067eda443d.png)
您最近一年使用:0次
2017-06-02更新
|
2171次组卷
|
14卷引用:江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(理)试题
江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(理)试题江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(文)试题江苏省淮安市楚中、新马、清浦、洪泽高中四校联考2019-2020学年高三上学期期中数学试题江西省南昌市南昌县莲塘一中2018届直升班周末练试卷数学试题【区级联考】天津市蓟州区2019届高三上学期期中考试数学(理)试题人教A版 成长计划 必修5 第二章数列 高考链接福建省厦门市二中2018-2019学年高一下学期期中数学试题江西省抚州市临川一中2018-2019学年高一下学期期中数学试题沪教版(上海) 高三年级 新高考辅导与训练 第二部分 走近高考 第四章 数列与数学归纳法高考题选(已下线)专题20 数列的综合-2020年高考数学母题题源解密(江苏专版)(已下线)专题08 数列的通项、求和及综合应用 第一篇 热点、难点突破篇(练)-2021年高考数学二轮复习讲练测(浙江专用))江西省临川第一中学2020-2021学年高一下学期期中考试数学试题(已下线)专题05 数列-十年(2012-2021)高考数学真题分项汇编(浙江专用)(已下线)专题06 数列在高考中的考法(难点,十一大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
解题方法
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda889dd758e0398a9ec905215311282.png)
(1)求函数
的极值;
(2)若
时,函数
有且只有一个零点,求实数
的值;
(3)若
,对于区间
上的任意两个不相等的实数
,都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda889dd758e0398a9ec905215311282.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafa44c4a404f62f54460dbcd7b8a0fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-06-02更新
|
1632次组卷
|
3卷引用:江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(理)试题
江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(理)试题江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(文)试题(已下线)第六章 导数与不等式恒成立问题 专题九 双变量不等式恒成立问题 微点1 值域法破解双变量不等式恒成立问题
名校
9 . 已知定点
,
,圆
:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/25ed10f5-92c2-4e72-8280-faa119017f13.png?resizew=142)
(1)过点
向圆
引切线
,求切线
的方程;
(2)过点
作直线
交圆
于
,
,且
,求直线
的斜率;
(3)定点
,
在直线
上,对于圆
上任意一点
都满足
,试求
,
两点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7eabead7e6e274bb177340193a21a0e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/21/25ed10f5-92c2-4e72-8280-faa119017f13.png?resizew=142)
(1)过点
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0e762fb6576557e718ea15a8daabea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(3)定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91382d6c5100c8a7dfb70f5ca8ee263e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b607bfe29cd4423557461ec46b20fdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2017-06-02更新
|
1380次组卷
|
4卷引用:江苏省淮安市淮海中学2017届高三下学期第二次阶段性测试数学(理)试题
名校
解题方法
10 . 已知函数
,直线
为曲线
的切线(
为自然对数的底数).
(1)求实数
的值;
(2)用
表示
中的最小值,设函数
,若函数
为增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13090a9194777b2105ecc6388301f4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221ad6017a2cc31555275742abace73b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85c34922a744db6288c376087ffb423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976706919bfd11475467dbc7e9a647da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0aea8bc07013e9cad5b459fb15119d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2016-12-04更新
|
978次组卷
|
6卷引用:2016届江苏省淮安市高三5月信息卷(最后一模)考试数学试卷