1 . “
”是“函数
(
且
)在
上单调递减”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74558b5df411c51e42e6a5318f60b7c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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2 . 金刚石的成分为纯碳,是自然界中天然存在的最坚硬物质,它的结构是由8个等边三角形组成的正八面体,如图,某金刚石的表面积为
,现将它雕刻成一个球形装饰物,则可雕刻成的最大球体积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bb52bec7f09eaf568dca3b4a4fc717.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9卷引用:湖南省益阳市2023届高三下学期4月教学质量检测数学试题
湖南省益阳市2023届高三下学期4月教学质量检测数学试题(已下线)押新高考第6题 立体几何(已下线)模块三 失分陷阱3 跨学科渗透题不会提取关键信息广西百色市2022-2023学年高一下学期数学期末考试模拟试题山西省运城市景胜中学2022-2023学年高一下学期4月月考数学试题(A卷)(已下线)专题07 球与几何体的切、接及立体几何最值问题-期末考点大串讲(苏教版(2019))(已下线)核心考点6 立体几何中组合体 B提升卷 (高一期末考试必考的10大核心考点) (已下线)专题6 组合体中的外接与内切问题【讲】(高一期末压轴专项)(已下线)【高一模块一】难度7 小题强化限时晋级练 (较难1)
名校
解题方法
3 . 已知复数
满足:
为纯虚数,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4861972c67ff1c22647fab531474987a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6卷引用:湖南省长沙市长郡中学2024届高三下学期考前保温卷(二)数学试题
4 . 如图所示,点
为正方体形木料
上底面的动点,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.三棱锥![]() |
B.存在点![]() ![]() ![]() |
C.不存在点![]() ![]() ![]() |
D.经过点![]() ![]() ![]() ![]() ![]() ![]() |
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5 . 已知椭圆
的对称中心为坐标原点,焦点在
轴上,
的离心率为
,且过点
, 等轴双曲线
以
的焦点
、
为顶点,动点
在
的右支上且异于顶点.
与
的方程;
(2)设直线
、
的斜率分别为
、
,直线
与
相交于点
、
,直线
与
相交于点
、
. 是否存在常数
使得
,若存在求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a68871af61de95498d346f2eb451aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a30de57df4e6f60bffe9ac591b24fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8387b687579c4d5152175c9d19e24232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b87502d85db80837ca6f2199ed6c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01a3c73d759970e5d84f333cce2d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb85b3fa748136b2f6189c55634eb259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87e0c79fdd8e028e234947bd9c4504b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.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/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091c4e9de55a1ec9872eb3e7bcb5b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bdb2733ca0f672a599d279ae493ca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
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6 . 已知复数
满足:
,其中
是虚数单位,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6aeb321423cb7943b207e83aefe541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de971553ea8a66d7849b138a4a0625c5.png)
A.![]() | B.1 | C.2 | D.4 |
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7 . 如图所示,四棱锥
中,
平面
,
,
,
,
为棱
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/19/8dad9901-c2ef-46ff-aa1e-383c21eb2cbf.png?resizew=145)
(1)求证:
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5cd38c1fcac9774e9d2a3f3dd7019b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/19/8dad9901-c2ef-46ff-aa1e-383c21eb2cbf.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d05b5b9502c2be337f9be84fe4ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46373b749211e2eb67d1b653b6087856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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8 . 英国数学家泰勒发现了如下公式:
,
,某数学兴趣小组在研究该公式时,提出了如下猜想,其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30756957dce9d4efd2953c6ce6f387ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1482fdc28b105333753fe63f72b062.png)
A.![]() | B.![]() |
C.![]() | D.当![]() ![]() |
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解题方法
9 . 已知
,则 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340d0523a32e8c0b1b8f606252b95952.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd9ac93064286e2c150b28ceb1ca928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340d0523a32e8c0b1b8f606252b95952.png)
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解题方法
10 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d394016b9fecac73f38cbc4ff18dee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8c37e6f44b62ff1bc4fb6266899892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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