名校
解题方法
1 .
的内角
的对边分别为
,已知
.
(1)求角
的大小;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b5c164f58a436b75026c228fea64e1.png)
,求
的面积;
(3)若角
为钝角,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0e02f7687d06562f4f65be3f4cee9e.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b5c164f58a436b75026c228fea64e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d447455ca3fa23710faaa4bd6b5d7c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ea513ef4c8fc4d8c31eff498740680.png)
您最近一年使用:0次
2024-06-03更新
|
1881次组卷
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3卷引用:北京市顺义区杨镇第一中学2021-2022学年高一下学期期中考试数学试卷
名校
解题方法
2 . 如图,在正方体
中,
为棱
的中点.动点
沿着棱
从点
向点
移动,对于下列三个结论:
①存在点
,使得
;
②
的面积越来越大;
③四面体
的体积不变.
所有正确的结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656aceec19543470bd58ed3d304d155d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c1b7f8c6e4793af4336d02addfbfbb.png)
③四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6738d05f0c7e4f0076fd5c094a4fb51c.png)
所有正确的结论的序号是
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/ca35a6aa-47b2-4355-a4df-1c9917f72bdf.png?resizew=163)
您最近一年使用:0次
3 . 已知数集![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7fcdb5423c1c8c032a3efcf245682.png)
具有性质P:对任意的k
,
,使得
成立.
(1)分别判断数集
与
是否具有性质P,并说明理由;
(2)若
,求A中所有元素的和的最小值并写出取得最小值时所有符合条件的集合A;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7fcdb5423c1c8c032a3efcf245682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40dc6d234f7984333f33d89de05e7ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110ef251c0b9cf48fb94c928ad95e36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412f8627babba57acd06ed10f4292210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1e76d1341e8e6bd89b7075150536bd.png)
(1)分别判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997bbd93dff19a5dba79bcd9d92f3129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13470c4e9665748fdd20d0b181abc8e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91a94ec87afbc073e077f2c453a304b.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e73d1fc9adb4448fd245f9bbf3d3ed0.png)
您最近一年使用:0次
名校
解题方法
4 . 已知数集
具有性质
:对任意的
,
,
,使得
成立.
(1)分别判断数集
与
是否具有性质
,并说明理由;
(2)若
,求
中所有元素的和的最小值并写出取得最小值时所有符合条件的集合
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc95c7daae935cccf8666865cba9eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd446b1c54b898bba5260537f1b30db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48d21d10197c3d078db9d1ac9293e79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce133aca7a46be0dd5e055096addebac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1e76d1341e8e6bd89b7075150536bd.png)
(1)分别判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997bbd93dff19a5dba79bcd9d92f3129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13470c4e9665748fdd20d0b181abc8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91a94ec87afbc073e077f2c453a304b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fcc8350d2ed52931f48b8b5ca11215.png)
您最近一年使用:0次
2024-02-24更新
|
153次组卷
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2卷引用:北京市第十九中学2022-2023学年高一上学期(10月月考)期中练习(一)数学试题
解题方法
5 . 如图,在棱长为1的正方体
中,点
是对角线
上的动点(点
与
不重合),则下面结论中正确的是__________ .(填序号)
①存在点
,使得平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
②存在点
,使得
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
③对任意点
的面积都不等于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0467b0675c3ecfb282cc88255284d3e1.png)
④
分别是
在平面
,平面
上的正投影图形的面积,对任意点
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04d6165b18f1a031b2a137961832491.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/14/2a051d9a-16b1-48f1-ab42-79751f3d8dba.png?resizew=163)
①存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1671cc93b233d6e52529a50c1a622ce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
③对任意点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc1c46130944027b9c2a39b77927269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0467b0675c3ecfb282cc88255284d3e1.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd5683dba7d9f29d643e9a3e3204fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3928d0c519a9e198a0313c75147f6ca.png)
您最近一年使用:0次
2023-08-10更新
|
652次组卷
|
2卷引用:北京市育英学校(四年制高三)2021-2022学年高二下学期期中练习数学试题
6 . 已知函数
,下列命题正确的是( )
①
是奇函数;
②方程
有且仅有1个实数根;
③
在
上是增函数;
④如果对任意
,都有
,那么
的最大值为2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707dd66e0d6f8c33c6e05b4555f12c31.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becd598a11b876d858728161a7a09705.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
④如果对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8800c695cb799480fe1eb3859868e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.①②④ | B.①③④ | C.①②③ | D.②③④ |
您最近一年使用:0次
2023-08-10更新
|
841次组卷
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3卷引用:北京市育英学校(四年制高三)2021-2022学年高二下学期期中练习数学试题
名校
7 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若函数
在
上有最小值,求
的取值范围;
(3)如果存在
,使得当
时,恒有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5860d9a568403efb392fbffa5c24fc0d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)如果存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea69fb59dc615852a0d248675788d82e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f6eb5caf8df72136690703ba74a839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc23217fe5d727feace1509cda9cc2be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2023-05-07更新
|
1366次组卷
|
7卷引用:北京市顺义区第一中学2022-2023学年高二下学期6月月考数学试题
名校
解题方法
8 . 下列关于函数
的判断正确的是___________ (填写所有正确的序号).
①
的解集是
;②
是极小值,
是极大值;③
没有最小值,有最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eec63a39bdb95603fb86a07889a43b7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3675b91a7bdeed64e0d5b7aab2e617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fe45ecd5d507adc2e7ffc1b1755856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb71ad742b421a7ba62d8c1923d33358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
9 . 已知函数
,若函数
的图象与直线
只有一个公共点,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56651dcea4d23547c3edfe0702a152cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37cd391ac8b75092d9b5528c348696ae.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 有限个元素组成的集合
,
,记集合
中的元素个数为
,即
.定义
,集合
中的元素个数记为
,当
时,称集合
具有性质
.
(1)
,
,判断集合
,
是否具有性质
,并说明理由;
(2)设集合
,
且
(
),若集合
具有性质
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a3f24673b6e954db3a8b229d8c4564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f5735aea7766caa4c9c8757081f9b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e2c8e4904ee61d9a40daecd70788a3.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/7fe5ea3b567065a753417b50332dd39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634e2f2ddab30df79fd8a81def7590ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdaed4e9e9df56d2df0f29695235f738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2db7c70d56acbfe9c2ee8520838b93.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/dad2a36927223bd70f426ba06aea4b45.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10671550e645b7ab56158c5cf5178c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5237c5e4d2c4a5a283576a2e8a4ab81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e0702a46dfb16c6e85cbf5a3877ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79059a3366ed1b339ba1317ce8a1e7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e8ab57234dfc54a5315381c59c94f6.png)
您最近一年使用:0次
2023-08-12更新
|
813次组卷
|
5卷引用:北京市第三十五中学2022-2023学年高一上学期期中数学试题
北京市第三十五中学2022-2023学年高一上学期期中数学试题四川省南充市南充市第一中学2023-2024学年高一上学期9月月考数学试题重庆市缙云教育联盟2023-2024学年高一上学期9月月度质量检测数学试题四川省成都东部新区养马高级中学2023-2024学年高一上学期10月月考数学试题(已下线)难关必刷01集合的综合问题(3种题型40题专项训练)-【满分全攻略】(人教A版2019必修第一册)