名校
1 . 如图,在四棱锥
中,侧面
底面
,
,
为
中点,底面
是直角梯形,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e4b1c019-6f6f-4527-af4e-60033c1394b1.png?resizew=198)
(1)求证:
平面
;
(2)设
为棱
上一点,
,试确定
的值使得二面角
为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37002ada5d194d4d062fa3285d7d9824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a1721a436858a999093da04bc17bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16114c73382b18f060150f2ab1f1484d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e4b1c019-6f6f-4527-af4e-60033c1394b1.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175df06e33cad4e6bbc3f2f6b0a2986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba7a4f5ec17e1792c9a7ed23349bbbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bff9fff7a158e95a7f5041629e7a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c20e88a33043f4279fff360c81006e.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在三棱柱中
,点
,
分别是
,
的中点,已知
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/1258b9dc-c3aa-4da6-9571-a8d8805306a5.png?resizew=229)
(1)求证:
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e219a4d3927218136116040bfe5cbaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f4da89257f9bb399d8b9cd874b222b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/1258b9dc-c3aa-4da6-9571-a8d8805306a5.png?resizew=229)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cf187bc2ede965870b90757b495f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312dab930cbbb9a4bb1a99f044dab73.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312dab930cbbb9a4bb1a99f044dab73.png)
您最近一年使用:0次
2020-02-16更新
|
428次组卷
|
4卷引用:重庆市重庆外国语学校2019-2020学年高二上学期一月月考数学试题
名校
3 . 如图,矩形
中,
,
为
的中点,现将
与
折起,使得平面
及平面
都与平面
垂直.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/f4cf092d-dea1-4215-8687-e4d4abf59ca9.png?resizew=382)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585288e61871608f6ff8f7e4a0beafbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79798199f1bc7ac85d969ebea1ef6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd3b58d32346a8d31bc90adc67d37b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ba3f676fda6a2aaaa55c9f32874a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422210c777ac0d625bbd81cc7601bf9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/f4cf092d-dea1-4215-8687-e4d4abf59ca9.png?resizew=382)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a351d71fa01d3f5920e374a8ee7b524.png)
您最近一年使用:0次
2020-02-16更新
|
268次组卷
|
2卷引用:重庆市杨家坪中学2019-2020学年高二上学期第二次月考数学试题
4 . 如图,三棱柱
中,
侧面
,已知
,
,
,点E是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/1941582f-9b4b-402d-a854-595f38408e1a.png?resizew=163)
(1)求证:
平面ABC;
(2)在棱CA上是否存在一点M,使得EM与平面
所成角的正弦值为
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec738fd1916032dff2b93f84f039404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7932b50fa677dfcd8e3b5061a90c133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/1941582f-9b4b-402d-a854-595f38408e1a.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ad7c180d6d084ecb25f23cb6fe9b10.png)
(2)在棱CA上是否存在一点M,使得EM与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914d46f7e72b55d2ff3d9bc38e02b31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0f4f8e3032f67e672b63791cc4d9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7e6f1b753b73381b71eb5f8cc7da42.png)
您最近一年使用:0次
2020-03-10更新
|
1316次组卷
|
13卷引用:重庆实验外国语学校2020-2021学年高二下学期6月月考数学试题
重庆实验外国语学校2020-2021学年高二下学期6月月考数学试题四川省射洪中学校2020-2021学年高二上学期第三次月考数学(理)试题湖北省武汉市部分重点中学2021-2022学年高二上学期期中联考数学试题贵州省毕节市第一中学2021-2022学年高二上学期第二次阶段性考试数学(理)试题江苏省连云港市赣榆智贤中学2022-2023学年高二下学期3月学情检测数学试题湖北省武汉市华中科技大学附属中学2022-2023学年高二上学期9月月考数学试题2020届广东省广州市执信中学高三2月月考数学(理)试题2020届山东省济宁市嘉祥一中高三下学期第一次质量检测数学试题2020届陕西省西安市西北工业大学附中高三下学期4月适应性测试数学(理)试题广东省深圳市盐田区深圳外国语学校2021届高三上学期1月月考数学试题黑龙江省哈尔滨市第六中学2021届高三12月月考数学(理)试题广东省广州市执信中学2021届高三上学期第四次月考数学试题甘肃省嘉陵关市第一中学2020-2021学年高三下学期四模考试数学(理)试题
名校
5 . 已知函数
.
(1)当
时,判断函数
的单调性;
(2)若
恒成立,求
的取值范围;
(3)已知
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d827f87e10a7848797480161dcf3cc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7b339246d52b29603d33c152f44de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1095bc055c41fa7d7e84b5726889319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1f8b3b98495effb739fa3165a495cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f9b7ef7b53169c74c58b723da57abda.png)
您最近一年使用:0次
2019-10-09更新
|
895次组卷
|
6卷引用:重庆市九龙坡区育才中学2019-2020学年高二上学期期中数学试题
重庆市九龙坡区育才中学2019-2020学年高二上学期期中数学试题(已下线)第三章+导数及其应用(基础过关)-2020-2021学年高二数学单元测试定心卷(人教版选修1-1)(已下线)第五章++一元函数的导数及其应用1(基础过关)-2020-2021学年高二数学单元测试定心卷(人教A版2019选择性必修第二册)(已下线)第三章 导数及其应用(基础过关)-2020-2021学年高二数学单元测试定心卷(苏教版选修1-1)河北省邯郸市大名一中2019-2020学年高三上学期第一次月考数学(理)试卷甘肃省白银市会宁县第一中学2019-2020学年高三上学期10月月考数学(理)试题
名校
6 . 在数列{an}中,已知
,且2an+1=an+1(n∈N*).
(1)求证:数列{an-1}是等比数列;
(2)若bn=nan,求数列{bn}的前n项和Tn.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84411382968d6c8abf8e615d195316d.png)
(1)求证:数列{an-1}是等比数列;
(2)若bn=nan,求数列{bn}的前n项和Tn.
您最近一年使用:0次
2019-12-01更新
|
435次组卷
|
2卷引用:重庆市九龙坡区育才中学2019-2020学年高二上学期期中数学试题
名校
解题方法
7 . 已知四棱锥
中,
平面
,底面
为菱形,
,E是
中点,M是
的中点,F是
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/91f3745f-3dcc-4437-b971-63d2a182fea7.png?resizew=175)
(1)求证:平面
平面
;
(2)直线
与平面
所成角的正切值为
,当F是
中点时,求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/91f3745f-3dcc-4437-b971-63d2a182fea7.png?resizew=175)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01cca53693e4bc901899f3360d21618.png)
您最近一年使用:0次
2020-02-16更新
|
709次组卷
|
3卷引用:重庆市重庆外国语学校2019-2020学年高二上学期一月月考数学试题
名校
8 . 如图,在梯形
中,
,
,
,四边形
为矩形,平面
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/7071555d-fd15-4658-91ea-b43f9feda2c1.png?resizew=204)
(1)求证:
平面
;
(2)在线段
上是否存在点
,使得平面
与平面
所成锐二面角的平面角为
,且满足
?若不存在,请说明理由;若存在,求出
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a75b1354b8b783a65ee5e3bc596a976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d4e574c9d139615d991a168cfbf63b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0db1f4f666a9be9ede868065a50997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3362a45b72536c714c5107b0ae94f1c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/7071555d-fd15-4658-91ea-b43f9feda2c1.png?resizew=204)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf2f0df53aa68c9c334165034788166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2db1674add0f4a1a24f5ed893b1c5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5663e672aca1d7825097d1fc465588f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
您最近一年使用:0次
2020-02-16更新
|
364次组卷
|
2卷引用:重庆市杨家坪中学2019-2020学年高二上学期第二次月考数学试题
9 . 如图所示,已知点
是抛物线
上一定点,直线
的倾斜角互补,且与抛物线另交于
,
两个不同的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/80984a12-c5be-4d0c-bdff-f177a3aa5f92.png?resizew=172)
(1)求点
到其准线的距离;
(2)求证:直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35863acd3e2ad4e5eb056952b9e25a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1bd115fa8e48e214fd2b90b0df6a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/80984a12-c5be-4d0c-bdff-f177a3aa5f92.png?resizew=172)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2019-11-12更新
|
999次组卷
|
4卷引用:重庆市杨家坪中学2019-2020学年高二上学期第二次月考数学试题
10 . 如图,在四棱锥
中,底面
是矩形,侧棱
底面
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/a9101137-cd69-4b1b-8e8e-10c0e9fb6495.png?resizew=167)
(1)求证:
平面
;
(2)若直线
与平面
所成的角为
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4d36ae30487030b827ce9413b9f13.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/2022/12/31/a9101137-cd69-4b1b-8e8e-10c0e9fb6495.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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2卷引用:重庆市杨家坪中学2019-2020学年高二上学期第二次月考数学试题