1 . 下列有关复数
,
的等式中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
2 . 已知在正三棱柱
中,
,
.
,
分别为棱
,
的中点,求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
您最近一年使用:0次
2024-06-01更新
|
797次组卷
|
2卷引用:江西省景德镇市2024届高三第三次质检数学试题
名校
解题方法
3 . 已知
是数列
的前
项和,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/4ac2855a6ca83cb72312408ed091f41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780019495df34d40fff9d8f31bbf3e74.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-06-01更新
|
505次组卷
|
2卷引用:江西省景德镇市2024届高三第三次质检数学试题
解题方法
4 . 已知全集
,
,
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14048dd4ecfce9e71153bc4b3227906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6d9e9e68d8fa416188fe9c5efafae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fb4aa116c973a64d466130074a7a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502ebab84a6b5049ede15eeadea18de2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 在
中,
,
,
分别为三个内角
,
,
的对边,其中
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.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/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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解题方法
6 . 已知函数
是奇函数,则
时,
的解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb523983e65e7ce5e5544238317c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-14更新
|
815次组卷
|
4卷引用:江西省景德镇市2024届高三第三次质检数学试题
江西省景德镇市2024届高三第三次质检数学试题(已下线)第四套 艺体生新高考全真模拟 (三模重组卷)浙江省绍兴市第一中学2024届高三下学期5月模拟数学试题(已下线)第04讲 指数与指数函数(八大题型)(练习)
名校
解题方法
7 . 已知角α的终边上有一点
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b95d47e0134efc07bd1626ee632517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d7130f678bb4b096f4ee9648f3c90d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-13更新
|
2793次组卷
|
7卷引用:江西省景德镇市乐平中学2023-2024学年高一下学期4月期中考试数学试题
江西省景德镇市乐平中学2023-2024学年高一下学期4月期中考试数学试题广东省江门市2024届高三一模考试数学试卷2024届广东省江门市高考模拟考试数学试题(一模)(已下线)第二套 艺体生新高考全真模拟 (一模重组卷)(已下线)第4题 由终边上的点,计算三角函数值(优质好题一题多解)河南省南阳华龙高级中学2023-2024学年高一下学期3月月考数学试题广东省汕头市潮阳区河溪中学2023-2024学年高三下学期第二学月质检数学试题
8 . 焦点为
的椭圆
上有一点
,若线段
的中点落在
轴上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e203545563ef6c33968cd9fab532638e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e203545563ef6c33968cd9fab532638e.png)
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9 . 动圆
经过定点
,且与
轴相切,则圆心
的轨迹为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908c9588178c02002157ad54eb440a56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.圆 | B.椭圆 |
C.双曲线 | D.抛物线 |
您最近一年使用:0次
解题方法
10 . 在直三棱柱
中,四边形
是边长为3的正方形,
,
,点
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/cd310c53-ba9e-4d45-8b70-1aecc6b5f8ed.png?resizew=151)
(1)求
的值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269c684310d0f7b5b9bf0a291e7ee748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4dfea6353fc25e88535e865a4982cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/cd310c53-ba9e-4d45-8b70-1aecc6b5f8ed.png?resizew=151)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfb6876bfebf8175326c61d394cdbb2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
您最近一年使用:0次