1 . 一只口袋中装有形状、大小都相同的6个小球,其中有红球1个,黑球2个,白球3个,分别从中两种不同方式摸出3个球,方式一:依次有放回:方式二:依次无放回.则( )
A.按方式一,则摸出是同一种颜色球的概率为![]() |
B.按方式一,设摸出黑色球的个数为X,则方差![]() |
C.按方式二,已知共有两种不同颜色的球的条件下,则2白1黑的概率为![]() |
D.若按方式一、二等可能,抽签决定,则最终摸出2白1黑的概率为![]() |
您最近一年使用:0次
2 . 设函数
.
(1)当
,求
在点
处的切线方程;
(2)证明:当
时,
;
(3)若函数
在
有唯一零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa5e01a42421e4aabee073b6f552f18.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2763b57a7399653fbded5264f0cee150.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2c484991fe4b01bd56c77a08a0e1da.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dbe1add7a58dbccdea4dbda1950fdae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
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解题方法
3 . 如图,在平面直角坐标系
中,已知双曲线
:
的右焦点为
,左、右顶点分别为
,
,过
且斜率不为0的直线
与
的左、右两支分别交于
、
两点,与
的两条渐近线分别交于
、
两点(从左到右依次为
、
、
、
),记以
为直径的圆为圆
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/07d8fe6f-6f3b-42b6-ae79-d601cc849399.png?resizew=149)
(1)当
与圆
相切时,求
;
(2)求证:直线
与直线
的交点
在圆
内.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767187f446dedae821d58facd64aed6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5660be1b6e0d3d1cab756d6f8f5855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.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/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/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/07d8fe6f-6f3b-42b6-ae79-d601cc849399.png?resizew=149)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca04f7af5df5606674310523b55f92.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
名校
4 . 画法几何的创始人——法国数学家蒙日发现:在椭圆
中,任意两条互相垂直的切线的交点都在同一个圆上,它的圆心是椭圆的中心,半径等于长、短半轴平方和的算术平方根,这个圆就称为椭圆C的蒙日圆,其圆方程为
.已知椭圆C的离心率为
,点A,B均在椭圆C上,直线
,则下列描述正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833bf16f0161259e9d973dbdd5c6b18c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659135b1133b87821c5ace5858a2ece5.png)
A.点A与椭圆C的蒙日圆上任意一点的距离最小值为b |
B.若l上恰有一点P满足:过P作椭圆C的两条切线互相垂直,则椭圆C的方程为![]() |
C.若l上任意一点Q都满足![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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2023-12-13更新
|
612次组卷
|
3卷引用:江苏省苏州园三2023-2024学年高二上学期12月月考数学试题
5 . 已知动点
在抛物线
上,过点
引圆
的切线,切点分别为
,
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da2419d703e4494762087407752e9865.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/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
2023-09-25更新
|
986次组卷
|
4卷引用:江苏省苏州市三校2023-2024学年高二上学期10月阶段检测数学试题
名校
6 . 已知函数
(
为常数).
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,设函数
的两个极值点
,
恰满足关系式
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31072d632d6bf9434d13ddfdedf84dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cbaed0638e7688e70e1465830bcc087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6d30db9fa5289a1ef1d87a17b90c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b916df8bdd03ba4a31c0b8470d13436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c92b6798cf165188e4a3811917a240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9625c9921d0b2706b926b9181a1a2fd8.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)若
,求
的极值;
(2)讨论
的单调性;
(3)若对任意
,有
恒成立,求整数m的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c476227ce91c982bd6991dbec25719.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
您最近一年使用:0次
2023-04-22更新
|
902次组卷
|
5卷引用:江苏省苏州市常熟市2022-2023学年高二下学期期中数学试题
名校
解题方法
8 . 已知双曲线
的焦距为10,且经过点
.A,B为双曲线E的左、右顶点,P为直线
上的动点,连接PA,PB交双曲线E于点C,D(不同于A,B).
(1)求双曲线E的标准方程.
(2)直线CD是否过定点?若过定点,求出定点坐标;若不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef66f4832adc43902055a7e6d258037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0a64af5faff8f83020a174b1f84ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
(1)求双曲线E的标准方程.
(2)直线CD是否过定点?若过定点,求出定点坐标;若不过定点,请说明理由.
您最近一年使用:0次
2023-03-01更新
|
2207次组卷
|
8卷引用:江苏省苏州市三校2023-2024学年高二上学期10月阶段检测数学试题
名校
解题方法
9 . 已知平面直角坐标系内一椭圆
,记两焦点分别为
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/dba55a1c-cad2-410b-a6eb-59023ff8e17b.png?resizew=222)
(1)求
的方程;
(2)设
上有三点
、
、S,直线
、
分别过
,
,连接
.
①若
,求
的面积;
②证明:当
面积最大时,
必定经过
的某个顶点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a5b087c270dfc3f5ac18ebbc07edf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efbe4a54a27dc48e3f52d6249bd1681.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/dba55a1c-cad2-410b-a6eb-59023ff8e17b.png?resizew=222)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7b816eca15d4b7d060013df53edd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10109d34ef06c3e721fd2c7128c5b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cce6cac0fdd4b1a434af8bcaec8fef.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9380191d5128132ab5995d3f048d3539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
②证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2023-01-16更新
|
1039次组卷
|
2卷引用:江苏省苏州市2022-2023学年高二上学期期末学业质量阳光指标调研数学试题
名校
10 . 已知函数
.
(1)求函数
在
上的零点个数;
(2)当
时,求证:
.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c208391dc7d39ae0a086a971e9925962.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e0f3bac0cff515db488b841232b1f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7424e7cfb13657bd23546157163f0e.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980c8904e5634cf0fb3edbcbee15b5a2.png)
您最近一年使用:0次