1 . 已知
,设
,当
为何值时:
(1)在复平面上
对应的点在第二象限?
(2)在复平面上
对应的点在直线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dcaaf1119323f08e173d178d5b6266c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)在复平面上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(2)在复平面上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.png)
您最近一年使用:0次
2020-02-29更新
|
195次组卷
|
3卷引用:上海市七宝中学2019-2020学年高二上学期期末数学试题
上海市七宝中学2019-2020学年高二上学期期末数学试题(已下线)专题5.3 期末考前必做30题(解答题基础版)-2020-2021学年高二数学下学期期末专项复习(沪教版)陕西省渭南市韩城市西庄中学2020-2021学年高二下学期期中理科数学试题
2 . (1)若圆
的方程是
,求证:过圆
上一点
的切线方程为
.
(2)若圆
的方程是
,则过圆
上一点
的切线方程为_______ ,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3503d330608e7138d1b529aba4512fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d340bd3f078b9261238d4fe59f1473c1.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e885d3743ae3d9f0fbd740b75f900083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
您最近一年使用:0次
2020-02-29更新
|
221次组卷
|
2卷引用:上海市七宝中学2019-2020学年高二上学期期末数学试题
名校
解题方法
3 . 等比数列
的前
项和为
,已如
,
,
.
(1)求
和
;
(2)证明:对任意
,
.
![](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/f9c752ebe8516e7d3327f3410473d9a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0863cf59114f905e9ad3debc5572792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4867dfd2b1fa71e386275fe0fed234.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de3115d089c83767f48103d9cbf890e.png)
您最近一年使用:0次
名校
4 . 已知某零件在
周内周销售价格
(元)与时间
(周)
的函数关系近似如图所示(图象由两条线段组成),且周销售量
近似满足函数
(件).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/13e718b5-fdb0-417f-a34f-e54f6a71eb86.png?resizew=167)
(1)根据图象求该零件在
周内周销售价格
(元)与时间
(周)的函数关系式
;
(2)试问这
周内哪周的周销售额最大?并求出最大值.
(注:周销售额=周销售价格
周销售量)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5af1a926e6394df85a96d499a380be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad41013be2140bae4e03e88d333bfe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a1224e47f31ecdfffd328d5a3ab6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd8180732d2ad676d428ef24f711d44.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/13e718b5-fdb0-417f-a34f-e54f6a71eb86.png?resizew=167)
(1)根据图象求该零件在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4dafff83fd807d0010d1805d9f4552e.png)
(2)试问这
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
(注:周销售额=周销售价格
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
您最近一年使用:0次
2020-01-15更新
|
643次组卷
|
10卷引用:四川省绵阳市2019-2020学年高一上学期末数学试题
四川省绵阳市2019-2020学年高一上学期末数学试题四川省绵阳南山中学2020-2021学年高一上学期期中考试数学试题河北省保定市徐水区第一中学2020-2021学年高一上学期期中数学试题四川省自贡市富顺县富顺第二中学校2020-2021学年高一上学期12月月考数学试题四川省遂宁市第二中学校2020-2021学年高一上学期第二阶段测试数学(理科)试题四川省遂宁市第二中学校2020-2021学年高一上学期第二阶段测试数学(文科)试题四川省遂宁市射洪中学2021-2022学年高一上学期第三学月考试数学试题湖北省华中师范大学第一附属中学2021-2022学年高一上学期第二次月考数学试题安徽省马鞍山市当涂第一中学2022-2023学年高一上学期第二次月考数学试题江苏省盐城市阜宁县2022-2023学年高一上学期期中数学试题
名校
5 . 有限个元素组成的集合为
,
,集合
中的元素个数记为
,定义
,集合
的个数记为
,当
,称集合
具有性质
.
(1)设集合
具有性质
,判断集合
中的三个元素是否能组成等差数列,请说明理由;
(2) 设正数列
的前
项和为
,满足
,其中
,数列
中的前
项:
组成的集合
记作
,将集合
中的所有元素
从小到大排序,即
满足
,求
;
(3) 已知集合
,其中数列
是等比数列,
,且公比是有理数,判断集合
是否具有性质
,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7fcdb5423c1c8c032a3efcf245682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3aad93268f00bafd92f62eb558926c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e4e175940ee08d81f043b7dca31027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636c838e9c10d079e5df897fce90761b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67a6c2a633e75de5f8368efadeea3f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4818e99a1f6002112c46267435c5bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(1)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f96df433e84544c871c77a345ea6465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2) 设正数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.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/48d11e54ab3af9064413f6d1b539a714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194deffc5a870ecc8aef876ea6b08a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701554763bdbbf2689a8dae07608da38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5d2ee6c33247b4318b009d9cd84502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bfe10d27aeaacce7c8f63f1f46c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c937a771a3a0739f90dbfb56075a092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6844ac74d55d7dc9337eafed6f89e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00229178e9719ffa67bea1e9d824209a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f07a1f7649dadf647a1cead8b1310b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1b79299104bad95963d719e697d73a.png)
(3) 已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9cfd1398bb75618f8221abd14e97af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7047589a766dc3123da1983c89c40c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
您最近一年使用:0次
2020-01-13更新
|
718次组卷
|
3卷引用:上海市奉贤区2019-2020学年高三上学期第一次模拟考试(期末)数学试题
名校
6 . 设
是两两不同的实数,且满足
,求
所有可能的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b16580ce6cc7b3c2d40e0830e11585b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
您最近一年使用:0次
名校
7 . 提升城市道路通行能力,可为市民提供更多出行便利.我校某研究性学习小组对成都市一中心路段(限行速度为
千米/小时)的拥堵情况进行调查统计,通过数据分析发现:该路段的车流速度
(辆/千米)与车流密度
(千米/小时)之间存在如下关系:如果车流密度不超过
该路段畅通无阻(车流速度为限行速度);当车流密度在
时,车流速度是车流密度的一次函数;车流密度一旦达到
该路段交通完全瘫痪(车流速度为零).
(1)求
关于
的函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b44af7f6fccd2d16bde10aa86ec6ce6.png)
(2)已知车流量(单位时间内通过的车辆数)等于车流密度与车流速度的乘积,求此路段车流量的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3779b4ea5477aebfe85113b0de1d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ad5aefad09097452ae92ae391d55c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e42f8f84a31f60237b44e7eef98c6e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1640a30dc98e5ad888b0babace1a791e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea8a6b779bb798da837b8210401b157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9458315d30d522f79cb9b500fe54942e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e42f8f84a31f60237b44e7eef98c6e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b44af7f6fccd2d16bde10aa86ec6ce6.png)
(2)已知车流量(单位时间内通过的车辆数)等于车流密度与车流速度的乘积,求此路段车流量的最大值.
您最近一年使用:0次
2020-03-15更新
|
392次组卷
|
5卷引用:2020届四川省成都七中高一上学期12月阶段性测试数学
2020届四川省成都七中高一上学期12月阶段性测试数学四川省成都市第七中学2019-2020学年高一上学期期末热身考试数学试题(已下线)专题04 函数模型-2020年高考数学(理)母题题源解密(全国Ⅲ专版)(已下线)专题04 函数模型-2020年高考数学(文)母题题源解密(全国Ⅲ专版)陕西省渭南市大荔县同州中学2020-2021学年高一上学期期中数学试题
名校
解题方法
8 . 已知函数
,
.
(1)当
时,求函数
在
上的单调性;
(2)是否存在实数
,使得函数
在
上的最小值为3,若存在,求出
的值,若不存在,请说明理由;
(3)当
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8670b8c6c3d9d7b72094c98eb719be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c4236a438856166b1f1d1b954f7d01.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37c84b49231d0344d0813a7bbd2acdaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7863b54185da5a3f1a765e1aa0577e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725173c99b6fbb958cdab101569985dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221d40ea04298c5569cf8b2708972b11.png)
您最近一年使用:0次
名校
解题方法
9 . 已知数列
的各项均为正数,前
项和
满足
;数列
是等比数列,前
项和为
.
(1)求数列
的通项公式;
(2)已知等比数列
满足
,
,
,求数列
前
项和为
;
(3)若
,且等比数列
的公比
,若存在
,使得
,试求
的值.
![](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/12361a535a8a032271793d9e4af66e73.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0dd3fb6af23def773e1b0032a4f3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9263a8a4d38e24f644f05ba367f1647b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd8d1066b8414dea1eadb0639d0a878.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fe0f4e8a80a2840c0f6929a8a6351b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d438267fddcd02afff8e73c6c3fec8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c8c0887a5ac32dad0b897514721d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88d24ad2095fc75ff166ad46612409d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
10 . 已知抛物线
:
的焦点为
,准线为直线
,
、
、
三点均在抛物线
上且
过点
,
过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/18248098-bbe3-4657-842c-a9e6757f6ea1.png?resizew=175)
(1)写出点
的坐标和直线
的方程;
(2)记
,
的面积分别为
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e0b4cce429003557b051ea0fa2f7de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/18248098-bbe3-4657-842c-a9e6757f6ea1.png?resizew=175)
(1)写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754b21397a7447766e490199d3afd6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884d40a97fd767e95f34f3b91ab8d84c.png)
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