解题方法
1 . 已知圆
:
,从点
向圆
作两条切线
,
,切点分别为
,
,若
,则点
到直线
的最小距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f4a3876f06ced9b3a872428ccc8e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773c2dd14d50e7f0d3326af4833d899a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.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/67c4bee090316c3805d094a33534bcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11967fcf736e8d05162bff8ce52bfc6.png)
您最近一年使用:0次
2 . 定义
表示不超过
的最大整数,例如
,
,
.执行下面的程序框图.则输出
( )
![](https://img.xkw.com/dksih/QBM/2020/11/28/2602813764919296/2605626549305344/STEM/10ca462a-2f16-4f46-a23c-a794b5e37abd.png?resizew=214)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6777c0654077b6386e35955aa295beb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1fb69f1b440cb1f606778e8c095736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebf6624a90a8222f9f2895a5face682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://img.xkw.com/dksih/QBM/2020/11/28/2602813764919296/2605626549305344/STEM/10ca462a-2f16-4f46-a23c-a794b5e37abd.png?resizew=214)
A.23 | B.26 | C.36 | D.47 |
您最近一年使用:0次
解题方法
3 . 若向量
,
为单位向量,且向量
与向量
相互垂直,则向量
,
的夹角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2868a9fe011f56a80c9d1a8ee4604d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fe4e713c108e118522a99ecd683924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98855759dbc3f9c7b6d7f02b1a5d013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af170cb281d709352b9ba5d0c32c1d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2868a9fe011f56a80c9d1a8ee4604d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fe4e713c108e118522a99ecd683924.png)
您最近一年使用:0次
名校
解题方法
4 . 已知曲线
的直角坐标方程是
,把曲线
上的点横坐标变为原来的2倍,纵坐标变为原来的
倍,得到曲线
.
(1)设曲线
上任一点为
,求
的最大值;
(2)
,
为曲线
上两点,
为坐标原点,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ba5f570d60775f547423b4887a50b0.png)
(2)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3eeae1143162b4d564f4b77e3f77cd8.png)
您最近一年使用:0次
2020-12-02更新
|
1398次组卷
|
5卷引用:湘豫名校联考2020-2021学年高三数学(理科)试题
5 . 已知函数
.
(1)讨论
的零点个数;
(2)求证:对一切
均有
成立,其中
为自然对数的底数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028f9d94299036aa7137c234b4514a45.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a69dc8f8d56b450a659ac0c48ef715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
您最近一年使用:0次
解题方法
6 . 如图,矩形
和菱形
所在的平面相互垂直,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/11/28/2602813764919296/2605626549698560/STEM/d73d8754a4a14d1e80b29f74eb9ce040.png?resizew=189)
(1)求证:平面
平面
;
(2)若
,
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2573d44bd027ab2e2fc2472c7852af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2020/11/28/2602813764919296/2605626549698560/STEM/d73d8754a4a14d1e80b29f74eb9ce040.png?resizew=189)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1978708de056a73d9212bb7849410b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f374baaa5a31893355f913fcd249e456.png)
您最近一年使用:0次
名校
解题方法
7 . 已知集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1ab56f05867083297d0f67e873d645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a91f5d16caf44bb26e41e0c0d9aa596b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5377eff9996bfc6da27ddbed01627307.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-12-02更新
|
353次组卷
|
3卷引用:湘豫名校联考2020-2021学年高三数学(理科)试题
湘豫名校联考2020-2021学年高三数学(理科)试题(已下线)黄金卷07-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(新高考专用)辽宁省葫芦岛市第一高级中学2023-2024学年高一上学期期末复习数学拓展提升卷(四)
解题方法
8 . 四棱锥
的底面
是边长为2的正方形,侧面
为等边三角形,二面角
的余弦值为
,则四棱锥
的外接球的表面积等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4155f313a2a5b634f83de8a6b1f1596d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
您最近一年使用:0次
9 . 已知
的展开式中
的系数为5,则它的展开式中各项系数和等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47419d7c8ed22a4c25cdf1a516963879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
您最近一年使用:0次
10 . 已知抛物线
:
,过其焦点作斜率为1的直线
交抛物线
于
、
两点,且
.
(1)求抛物线
的方程;
(2)若
是抛物线
上的点,点
,
在
轴上,圆
内切于
,若
面积等于8,求
点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e265ce107592c375b78007107a9c00a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次