名校
1 . 已知函数
,其中
为常数.
(1)若直线
是曲线
的一条切线,求实数
的值;
(2)当
时,若函数
在
上有两个零点.求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077f0c0cdab9b4a24c5d7e391cf88c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11fb7d1b029923e513fe596e0c0cac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b277f664d7a37bc155a672890106c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a117e2654de2baf925540cca08cbec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2019-06-11更新
|
961次组卷
|
4卷引用:湖南湖北四校2019-2020学年高三下学期4月学情调研联考理科数学试题
2 . 在平面直角坐标系
中,直线
的参数方程为
(
为参数),曲线
.以坐标原点为极点,
轴正半轴为极轴立极坐标系,曲线
的极坐标方程为
.
(Ⅰ)若直线
与
,
轴的交点分别为
,
,点
在
上,求
的取值范围;
(Ⅱ)若直线
与
交于
,
两点,点
的直角坐标为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0613653487599c76066c6dbed29f50e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e6113774add630fb87f541984d14f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbd143c29c0a6013ce143a06c07ae67.png)
(Ⅰ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56c21c07d6bb8b200cd82bca802642a.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f48e1c656aace41360467f254e359d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbea365d56573957a1df842ff7653900.png)
您最近一年使用:0次
2019-05-12更新
|
1368次组卷
|
8卷引用:湖南湖北四校2019-2020学年高三下学期4月学情调研联考理科数学试题
名校
3 . 如图,在四边形ABCD中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/200f51b4-e072-43b3-b933-a0f80a1f665d.png?resizew=161)
求边AB的长及
的值;
若记
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f7b5ab15b93aaed43357898ffa2aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6776b2b892a97d39e885a14e60cfe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d9dd79c0616c0089af92a1834faf1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f976007b8d754ac3bf5793ed2fce37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd0c00f62c22e90e7d542a2f8dd83d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/200f51b4-e072-43b3-b933-a0f80a1f665d.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b38caf69f2b619035acfba6f09ae67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00c5e305b50f408049c1dcbcc070d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2fcb7efdf84fccebee16e2e92f0946a.png)
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2019-04-13更新
|
1136次组卷
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6卷引用:湖南省怀化市新博览2020-2021学年高三上学期期中联考数学试题
名校
4 . 已知函数
.
(1)求
的值及
的最小正周期;
(2)若函数
在区间
上单调递增,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14339873d8e4e5617a759d14708f811d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecd5f251e8a94a611cc98d239ff9575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbae0d22d931ac42b565c7990764a2c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-03-31更新
|
878次组卷
|
6卷引用:湖南省怀化市新博览联考2019-2020学年高三上学期期中数学(文)试题
名校
5 . 已知函数
.
(1)若
,求
在
处的切线方程;
(2)若
在
上有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794975ecc2d487d85767a834e4b729b2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753d5b5b7cfd8cea83a1259ec21ca530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-03-30更新
|
1587次组卷
|
5卷引用:湖南师大附中2020届高三(上)第二次月考数学(文)试题
6 . 为了政府对过热的房地产市场进行调控决策,统计部门对城市人和农村人进行了买房的心理预期调研,用简单随机抽样的方法抽取110人进行统计,得到如下列联表:
已知样本中城市人数与农村人数之比是3:8.
分别求样本中城市人中的不买房人数和农村人中的纠结人数;
用独立性检验的思想方法说明在这三种买房的心理预期中哪一种与城乡有关?
参考公式:
.
买房 | 不买房 | 纠结 | |
城市人 | 5 | 15 | |
农村人 | 20 | 10 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fafdd49d007b31e16a0839dfc94ec2.png)
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
k | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
您最近一年使用:0次
2019-02-18更新
|
474次组卷
|
2卷引用:湖南省怀化市2018-2019学年高三上学期期中文科数学试题
名校
7 . 已知函数
,
.
(1)求曲线
在
处的切线方程;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab123bfa712ab34037975bc24332e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a564ac43bb6f6d58ab1c35ca30af2ea8.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29c5c266a6d834a244c1f50c8f9848c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-02-12更新
|
1063次组卷
|
6卷引用:湖南省怀化市新博览2020-2021学年高三上学期期中联考数学试题
名校
8 . 已知函数
,
.
(1)当
时,求不等式
的解集;
(2)若
,都有
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3687b2e8480d74548c40cc70b99719c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0db2c49919467a2e14540f2aabd05cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000611ae296699aedc383b220c0dc155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627c8c28baadf1d1edae05b4b2d6954c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-04-05更新
|
1062次组卷
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21卷引用:湖南湖北四校2019-2020学年高三下学期4月学情调研联考理科数学试题
湖南湖北四校2019-2020学年高三下学期4月学情调研联考理科数学试题湖南湖北四校2019-2020学年高三下学期4月学情调研联考文科数学试题吉林省长春市普通高中2018届高三质量监测(三)数学(理)试题吉林省长春市普通高中2018届高三质量监测(三)数学(文)试题辽宁省大连市2018届高三第一次模拟数学理试题辽宁省大连市2018届高三第一次模拟数学文试题东北三省四市2018届高三高考第一次模拟考试数学(文)试题【全国校级联考】东北三省四市教研联合体2018届高三第二次模拟考试文科数学试题【全国市级联考】山西省大同市与阳泉市2018届高三第二次教学质量监测试题数学(理)试题【全国市级联考】山西省大同市与阳泉市2018届高三第二次教学质量监测数学(文)试题甘肃省师大附中2019届高三上学期期中模拟文科数学试卷【全国百强校】四川省棠湖中学2019届高三上学期第三次月考数学(文)试题【全国百强校】四川省棠湖中学2019届高三上学期第三次月考数学(理)试题(已下线)河北省衡水中学2019届高三上学期六调考试数学(文)试题【区级联考】广东省广州市天河区2019届高三毕业班综合测试(二)理科数学试题【区级联考】广东省天河区普通高中2019届毕业班综合测试(二)文科数学试题【市级联考】河北省衡水市2019届高三下学期第三次质量检测数学(文)试题黑龙江省双鸭山市第一中学2019-2020学年高三上学期12月月考数学(理)试题2019届河北省衡水中学高三年级第三次质检考试数学文科试题陕西省延安市黄陵中学高新部2017-2018学年高二6月月考数学(文)试题四川省广安市广安中学2019-2020学年高二上学期第四次月考数学(理)试题
9 . 如图,椭圆
的左焦点为
,过点
的直线交椭圆于
,
两点,
的最大值为
,
的最小值为
,满足
.
![](https://img.xkw.com/dksih/QBM/2018/12/7/2091699949862912/2092327303290880/STEM/a653b36c2c3e4fe6a11d6542cc532fbf.png?resizew=211)
(1)若线段
垂直于轴时,
,求椭圆的方程;
(2)设线段
的中点为
,
的垂直平分线与
轴和
轴分别交于
,
两点,
是坐标原点,记
的面积为
,
的面积为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/61f20a5abdb5deef164c7d633c2c8fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530b46eaf82365b2261726e663970a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa8474cbb56b95a6914553a561b5081.png)
![](https://img.xkw.com/dksih/QBM/2018/12/7/2091699949862912/2092327303290880/STEM/a653b36c2c3e4fe6a11d6542cc532fbf.png?resizew=211)
(1)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11a319e2bf6e99b75f67f2eb20465ca.png)
(2)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93678fba24cc862076dc430e64efcf5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d834bbd597641e9774e82f8dd46c03ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
2018-12-08更新
|
805次组卷
|
2卷引用:湖南省怀化市新博览2020-2021学年高三上学期期中联考数学试题
10 . 已知
分别为
三个内角
的对边,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08c546956cfde8aa6e160a56ba8e801.png)
(1)求角
的大小;
(2)若
的周长为
,外接圆半径为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08c546956cfde8aa6e160a56ba8e801.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2018-11-18更新
|
676次组卷
|
3卷引用:【校级联考】湖南省浏阳市六校联考2019届高三上学期期中考试数学(文)试题