名校
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6182dd34e805c3d0addd6af68d8f3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)讨论
的单调性;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6182dd34e805c3d0addd6af68d8f3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94dae7c191953aa0f559a9e384dede6.png)
您最近一年使用:0次
2024-04-24更新
|
3183次组卷
|
6卷引用:宁夏银川市贺兰县第一中学2023-2024学年高二下学期第二阶段考试数学试卷
名校
解题方法
2 . 如图所示,直角梯形PABC中,
,
,D为PC上一点,且
,将PAD沿AD折起到SAD位置.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/c30f7a38-d34c-42a1-93f9-514410f6bb66.png?resizew=309)
(1)若
,M为SD的中点,求证:平面AMB⊥平面SAD;
(2)若
,求平面SAD与平面SBC夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6956513649811bd1a2f8c3e4ca8793c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c692d803f7bc2d0d5cfeb22975ef2f10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/c30f7a38-d34c-42a1-93f9-514410f6bb66.png?resizew=309)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114328e2c6128710608977e7927c7a0b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e851cf27f94ac130d849e0b83af75528.png)
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2024-01-26更新
|
361次组卷
|
3卷引用:宁夏回族自治区石嘴山市第三中学2024届高三第一次模拟考试数学(理)试题
宁夏回族自治区石嘴山市第三中学2024届高三第一次模拟考试数学(理)试题河北省2024届高三上学期质量监测联考数学试题(已下线)第3章 空间向量及其应用(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)
名校
解题方法
3 . 如图,
是边长为3的正方形,
平面
,
,
,
与平面
所成角为60°.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/c5720013-3548-4f6e-a718-7b6e9d250117.png?resizew=101)
(1)求证:面
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8781208b8fe41342b9bd8b20456cdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5624c7941eb3cca11d8efbe76d9af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/c5720013-3548-4f6e-a718-7b6e9d250117.png?resizew=101)
(1)求证:面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f717b7d4d0978eec7330afec554c078.png)
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名校
解题方法
4 . 已知在正项数列
中,
,点
在双曲线
上.在数列
中,点
在直线
上,其中
是数列
的前
项和.
(1)求数列
的通项公式并求出其前
项和
;
(2)求证:数列
是等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d9f6e2cf5edceff3ab9c4ea30343cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0eec60a34f2998bb9518b101042d1ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d144c46d67492be75fc9402747b5a498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bdbaee1c6d92b27ceac6e066cfce36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)求数列
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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5 . 已知椭圆
的离心率
,且点
在椭圆E上,直线
与椭圆E交于不同的两点A,B.
(2)设直线OA,OB的斜率分别为
,证明:
;
(3)设直线l与两坐标轴的交点分别为P,Q,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bbe873760a74d9aedaafc98fe7e83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451ee8353864dfdb87e3a44eb505f83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e02a893620592d2ab3e3c0bff6529f0.png)
(2)设直线OA,OB的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a778e57014d81a57b823ef7761aec5bd.png)
(3)设直线l与两坐标轴的交点分别为P,Q,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0b8ae5b933dd37b9311034029a0a17.png)
您最近一年使用:0次
名校
解题方法
6 . 设
在
时,
恒成立.
(1)求证:
;
(2)求θ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453f7ea73cfb9d23c8f3c5b66e02243f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdea6c3f1aa321e573981eed94c34c43.png)
(2)求θ的取值范围.
您最近一年使用:0次
2024-02-04更新
|
305次组卷
|
2卷引用:宁夏石嘴山市第三中学2015-2016学年高一下学期期末数学试题
7 . 如图,在三棱锥
中,
平面
,
,
,
,
分别为
,
的中点.
平面
;
(2)证明
平面
,并求直线
到平面
的距离.
![](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/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7ae4091a3a2767fde8e9f5a604c1a1.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb178784aa857d4d4683e650273f054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2024-04-29更新
|
2912次组卷
|
7卷引用:宁夏银川市唐徕中学2024届高三下学期适应性考试数学(理)试题
宁夏银川市唐徕中学2024届高三下学期适应性考试数学(理)试题重庆市第八中学校2023-2024学年高三下学期高考模拟(三)数学试题(已下线)高一第二学期第三次月考(范围:第9~14章)-重难点突破及混淆易错规避(苏教版2019必修第二册)(已下线)专题04 第八章 立体几何初步(2)-期末考点大串讲(人教A版2019必修第二册)江苏省扬州市第一中学2023-2024学年高一下学期5月教学质量调研评估数学试题四川省眉山市仁寿第一中学校南校区2024届高三下学期高考模拟考试(四)文科数学试题福建省厦门外国语学校2023-2024学年高一下学期第二次月考数学试卷
名校
8 . 在三棱台
中,
平面
,
,
,
,
为
中点.
平面
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee6a2c9d3843855bf89516bdd6ad5de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45224f7eac9d0cef64bf28d93e7721a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1604adab63e6350177d8130123dca0f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9260ee90b4107dcdc5b2b0937c40e8c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b668b5c01e0b1a529cc4e3efb2e9057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c552b00e3c50158e7f2ac5d6591d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
您最近一年使用:0次
2024-02-12更新
|
403次组卷
|
3卷引用:宁夏青铜峡市宁朔中学2023-2024学年高二下学期开学考试数学试题
9 . 如图,在四棱锥
中,
平面
,
为
中点,点
在梭
上(不包括端点).
平面
;
(2)若点
为
的中点,求直线
到平面
的距离.
![](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/6c87a0b2558b7890f0d5cacc6c09f7a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885592836e5cb6c2df440fc039c696a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2024-04-13更新
|
2195次组卷
|
6卷引用:宁夏回族自治区银川一中2024届高三第三次模拟考试理科数学试题
宁夏回族自治区银川一中2024届高三第三次模拟考试理科数学试题吉林省吉林地区普通高中2024届高三第三次模拟考试数学试题(已下线)模块五 专题3 全真能力模拟3(苏教版高二期中研习)(已下线)第33题 空间距离解法笃定,向量方法建系第一(优质好题一题多解)(已下线)6.4 空间向量与立体几何(高考真题素材之十年高考)2黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期阶段考试数学试题
名校
10 . 已知函数
.
(1)当
时,讨论函数
的单调性;
(2)若函数
有两个不同的极值点
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f2833c86b4a21cfb25ec445b66fc4a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64b1a6ad90a44dd02e91a62f2c0364.png)
您最近一年使用:0次