1 . 已知函数
.
(1)若
时,
恒成立,求实数
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f9ce674ba7cbf00ed4b4cdc356e013.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7817738b92d37149b941b723eac0c7c5.png)
您最近一年使用:0次
2018-10-28更新
|
737次组卷
|
4卷引用:【省级联考】湖北省“荆、荆、襄、宜四地七校考试联盟”2019届高三上学期10月联考试题数学(理)
名校
2 . 已知椭圆
过点
,且其中一个焦点的坐标为
.
(1)求椭圆
的方程;
(2)过椭圆
右焦点
的直线
与椭圆交于两点
,在
轴上是否存在点
,使得
为定值?若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ddd8044cbd4ced9edbe46f922453488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2018-10-28更新
|
2362次组卷
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4卷引用:【省级联考】湖北省“荆、荆、襄、宜四地七校考试联盟”2019届高三上学期10月联考试题数学(理)
名校
3 . 设实数
,若对任意的
,不等式
恒成立,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ded0e2a829a874624ff1e3b5bd216c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10edbbc282ca1b2916e33a7b9f0139be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-10-28更新
|
820次组卷
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2卷引用:【省级联考】湖北省“荆、荆、襄、宜四地七校考试联盟”2019届高三上学期10月联考试题数学(理)
名校
4 . 已知函数
.
(1)求函数
在点
处的切线方程;
(2)若存在
,对任意
,使得
恒成立,求实数
的取值范围;
(3)已知函数
区间
上的最小值为1,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d52bee60da5d6b728ed40c002bddcc.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd72eb16636718e909f3b013ac50d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e300e60be8d1827744cdc01e7d04c840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd8d63bef4787dda05cb30f5d55be8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807fd74f846209d88ebead057c3a43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-10-11更新
|
934次组卷
|
3卷引用:【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(理)试题1
【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(理)试题1【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(理)试题2(已下线)备战2020年高考数学之考场再现(山东专版)09
名校
5 . 已知函数
.
(1)求函数
的单调区间;
(2)设函数
,若
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725a62e722f533b3827b8aa120aa5e8c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/240c7d19a8f1f574b8c06f193b7980c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3155eb542430d6496a68c5aa8ba2ba35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee31b9dffcd91ff2f5477410bc09f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-10-11更新
|
1580次组卷
|
3卷引用:【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(理)试题1
【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(理)试题1【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(理)试题2(已下线)备战2020年高考数学之考场再现(山东专版)09
名校
6 . 已知函数
.
(Ⅰ)若
,求函数
在
上的最小值;
(Ⅱ)若
,当
时,
恒成立,求整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8cc949fd472a1b119b6f4bc90e17bd.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5402bcf6bdc06e124f4b1b19cad4486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4687a02cf2e98c88c2ecbcac26762b9.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ba61b0dac3cdcdeb7558060e1ec39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e9ea4238ad40fc37555521580d25d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0879734ee766cb630cfeb3f25fea7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(参考数据)
您最近一年使用:0次
2018-10-11更新
|
598次组卷
|
3卷引用:【校级联考】齐鲁名校教科研协作体湖北、山东部分重点中学2019届高三第一次联考数学(文)试题
7 . 已知函数
.
(1)当
时,讨论函数
的单调性;
(2)求函数
在区间
上零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9764b8803022d3467cd7f26e10277a0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
您最近一年使用:0次
2018-07-01更新
|
1036次组卷
|
2卷引用:【校级联考】湖北省八校(鄂南高中.黄石二中.华师一附中.黄冈中学.荆州中学.孝感中学.襄阳四中.襄阳五中)2019届高三第二次联合考试数学(理科)试题
8 . 如图所示,圆O:
,
,
,D为圆O上任意一点,过D作圆O的切线分别交直线
和
于E,F两点,连AF,BE交于点G,若点G形成的轨迹为曲线C.
![](https://img.xkw.com/dksih/QBM/2019/3/29/2170960007110656/2171884772433920/STEM/60b8552bb7964c8c9999ca0d016e1175.png?resizew=133)
记AF,BE斜率分别为
,
,求
的值并求曲线C的方程;
设直线l:
与曲线C有两个不同的交点P,Q,与直线
交于点S,与直线
交于点T,求
的面积与
面积的比值
的最大值及取得最大值时m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb2a87898de9b865d41b101c6458ec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8850ca88266a65c7d289ebfbea3fe30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8531c11be3e63fdaa5bb686ac111400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa91e8bdc80f8783436466b396692873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e38246cbda4d8b643cbc891dc4b0c89.png)
![](https://img.xkw.com/dksih/QBM/2019/3/29/2170960007110656/2171884772433920/STEM/60b8552bb7964c8c9999ca0d016e1175.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265c6ce07342121b2cf0f8b85c0a602d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1e8a252c87ebf3b819c0a6587a3383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf63be2f9326500e8072cd6451c42c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ceca1480fa1725687765bfc958a35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa91e8bdc80f8783436466b396692873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efdb6b68633d9f11a98608b4f2f9536f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af77479b39efa371b53b476200c62383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55a53a31d497470a2b6f37a9efdf139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b109838e10fd78330c54d0f03887549.png)
您最近一年使用:0次
2018-07-01更新
|
1032次组卷
|
3卷引用:【校级联考】湖北省八校(鄂南高中.黄石二中.华师一附中.黄冈中学.荆州中学.孝感中学.襄阳四中.襄阳五中)2019届高三第二次联合考试数学(理科)试题
名校
解题方法
9 . 已知
的直角顶点
在
轴上,点
为斜边
的中点,且
平行于
轴.
(Ⅰ)求点
的轨迹方程;
(Ⅱ)设点
的轨迹为曲线
,直线
与
的另一个交点为
.以
为直径的圆交
轴于
即此圆的圆心为
,
求
的最大值.
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9399426213b089e547691138dd1e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(Ⅰ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8165d43216ed030ca0634ccd253bc209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf33fc261b2ce1eac3b5133e91d5d4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2018-06-14更新
|
852次组卷
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6卷引用:2019届湖北省黄冈中学高三下学期5月第三次模拟考试数学(文)试题
名校
解题方法
10 . 已知顶点是坐标原点的抛物线
的焦点
在
轴正半轴上,圆心在直线
上的圆
与
轴相切,且
关于点
对称.
(1)求
和
的标准方程;
(2)过点
的直线
与
交于
,与
交于
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d70de1ffdd9aa376b09bbcfa12644a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac2e885ba58b609cb848dc6954b1ccf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a5b099b9112ed6a9f71b4a65875ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f86ed9ff28273de73ba9d1f3e3a81f3.png)
您最近一年使用:0次
2018-05-05更新
|
673次组卷
|
7卷引用:2019届湖北省黄冈中学高三适应性考试数学(文)试题