名校
1 . 如图,三棱柱
的侧棱与底面垂直,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/9/11/3064419340214272/3064754319769600/STEM/f52bca12f2c74f7f92f98ac4cde795c9.png?resizew=215)
(1)求证:
;
(2)求
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/b6dfcb0a6104a9be3ee2d8e4c9e5991b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/9/11/3064419340214272/3064754319769600/STEM/f52bca12f2c74f7f92f98ac4cde795c9.png?resizew=215)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4cdc3a083d1263634d510f172dab09.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
您最近一年使用:0次
2022-09-12更新
|
3846次组卷
|
6卷引用:山东省潍坊高密市第三中学2022-2023学年高二上学期9月月考数学试题
2 . 如图,在直三棱柱
中,
,E,F分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/1f92233d-846c-4a74-8405-27b8c13e7403.png?resizew=171)
(1)若
,证明:平面
平面
;
(2)若
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b51da47ab8433342f7a319e412fefae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1857eadd6b23a87a1a5b4ffff584efd9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/1f92233d-846c-4a74-8405-27b8c13e7403.png?resizew=171)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a76f52ae3ef071a5084d09ec035c80c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d74b86f8ff81c51599d1a7b7af22f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da405fa557b90c750249ad034a0d50e.png)
您最近一年使用:0次
2022-12-02更新
|
1523次组卷
|
2卷引用:湖南省郴州市安仁县第一中学2021-2022学年高二数学模拟试题
名校
解题方法
3 . 如图所示,在三棱锥
中,
平面
,
,过点
分别作
,
,
,
分别为垂足.
平面
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfbaf73297240eb116f22489519895a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f392902d611863c6908a48e696e7bd8f.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/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
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名校
4 . 已知
,函数
.
(1)证明
存在唯一极大值点;
(2)若存在
,使得
对任意
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f37fc06b68ea054b6a3ebf8685d2cd6.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eeafd2a54302e4582c934c7ed347b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2022-11-26更新
|
577次组卷
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2卷引用:江苏省百校联考2022-2023学年高三上学期第二次考试数学试题
5 . 四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810ee7bc82b6f452afb3fc18691abc3b.png)
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15416b74b2ecbcfa38cf34a9ffff730.png)
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/bf16293a-de1d-481a-9541-f98f7b17c7aa.png?resizew=176)
(1)求证:平面
平面
;
(2)求
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810ee7bc82b6f452afb3fc18691abc3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5956b8670a9bf9d3e3aea0eae1f18dfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15416b74b2ecbcfa38cf34a9ffff730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee7bab1e2ac76f00a75a3ad08ef3606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/bf16293a-de1d-481a-9541-f98f7b17c7aa.png?resizew=176)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
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2022高三·全国·专题练习
名校
6 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/8/19/3047950673870848/3048161026072576/STEM/2c5311e3f95b4e0fa103243cd064f236.png?resizew=167)
(1)求证:
平面
;
(2)求平面
与平面
夹角的正弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30f6595dd643813b11ad71df61a10dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0295d3385f3ec11ad4d77d39d2e68ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bed3e10975653a8322f9b3e6abc1df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2022/8/19/3047950673870848/3048161026072576/STEM/2c5311e3f95b4e0fa103243cd064f236.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa14afe6f0aad22e8e869c39a60be657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4739afd7311501e948aa4e1e5c1cb17.png)
您最近一年使用:0次
解题方法
7 . 已知点
是椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
与抛物线
:
(
)的一个公共点,且椭圆与抛物线具有一个相同的焦点
.过点
且不垂直于
轴的直线l与椭圆相交于
两点.
(1)求椭圆
及抛物线
的方程;
(2)若点
关于
轴的对称点为点
,证明:直线
与
轴交于定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278b99933923773091940d566d36277c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d419a3c588616c8e9765cd4bbb6190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2022-12-22更新
|
902次组卷
|
2卷引用:广西柳州高级中学、南宁市第三中学2023届高三上学期12月联考数学(文)试题
名校
解题方法
8 . 如图所示,圆锥的高
,底面圆O的半径为R,延长直径AB到点C,使得
,分别过点A,C作底面圆O的切线,两切线相交于点E,点D是切线CE与圆O的切点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/514df9e3-d301-45d1-bf16-15402e7b3780.png?resizew=226)
(1)证明:平面
平面
;
(2)若直线
与平面
所成角的正弦值为
,求点A到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae890f9e8b32aa53a54158f24f4a87bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c76a0cbea833ae927c2f05602a965ec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/514df9e3-d301-45d1-bf16-15402e7b3780.png?resizew=226)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f29837db4ec4d0aeb8d7ad9fcb316d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425bb0d1c21eb4448dbbe9a41efa7538.png)
您最近一年使用:0次
2022-11-25更新
|
3283次组卷
|
8卷引用:湖南省长沙市一中等名校联考联合体2022-2023学年高三上学期11月联考数学试题
湖南省长沙市一中等名校联考联合体2022-2023学年高三上学期11月联考数学试题广东省揭阳市普宁国贤学校2022-2023学年高二上学期11月月考数学试题河北省衡水中学2023届高三下学期一调数学试题河北省沧州市沧县中学2023-2024学年高二上学期9月月考数学试题福建省建瓯市芝华中学2023-2024学年高二上学期第一次阶段考试数学试题(已下线)高二数学上学期第一次月考模拟卷(空间向量与立体几何+直线的方程)-【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)四川省绵阳中学2022-2023学年高三上学期期末模拟检测试题(已下线)6.3.4空间距离的计算(3)
9 . 已知函数
在点
处的切线与坐标轴围成的三角形的面积为
.
(1)求实数
的值;
(2)证明:函数
在区间
上有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe4550afd9603b2ee84f395a96e5971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40fb8083dee4195745aae9a3f5b21b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921b615d902f9e5be9cc2c41264da2d4.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c534e240759d180cfd6aec100e501edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebb9595cfebe608e2b3ec06c10421dd.png)
您最近一年使用:0次
名校
解题方法
10 . 在平面直角坐标系
中,已知点
,直线
,点M到l的距离为d,若点M满足
,记M的轨迹为C.
(1)求C的方程;
(2)过点
且斜率不为0的直线与C交于P,Q两点,设
,证明:以P,Q为直径的圆经过点A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da76dc8c91f5d037edfe0477ee07b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed0c6519373733b6606017b69efb03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812750d0fd2699239a76baa17ffe80dc.png)
(1)求C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da76dc8c91f5d037edfe0477ee07b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3323d8f54140f6950b60a4df46ce991.png)
您最近一年使用:0次