名校
1 . 已知椭圆
的左、右焦点分别为F1,F2,点A,B是椭圆C上异于长轴端点的两点,且满足
,若
,则λ=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69daca955a565fa537347dd0d93783f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1ee3b19b315b03efd44ff9c56ff5cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8174c73ce27865ba2ec48d337be275.png)
A.5 | B.4 | C.3 | D.2 |
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2024-03-13更新
|
398次组卷
|
2卷引用:广东省佛山市南海区石门中学2023-2024学年高三1月调研考试数学试题
解题方法
2 . 【多选题】下列命题中,为真命题的有( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知双曲线
(
),以双曲线C的右顶点A为圆心,b为半径作圆A,圆A与双曲线C的一条渐近线交于M,N两点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3181e58f09e9fec4e43e422b82831b7.png)
A.![]() | B.![]() | C.![]() | D.2 |
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2024-02-23更新
|
804次组卷
|
3卷引用:广东省深圳市深圳外国语学校2024届高三上学期第一次调研数学试题
名校
4 . 如图1,在平面五边形
中,
是等边三角形.现将
沿
折起,记折后的点
为
,连接
,得到四棱锥
,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/ffd63930-2bec-4ac1-b862-c1b5aed3206f.png?resizew=308)
(1)证明:
;
(2)若平面
平面
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3acd2679b6ce05d6a67cb67bee919ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92a66d30863976e2036fc4cbf93c906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c49e04a1cbd79bfe0f8fdb4fd390fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/ffd63930-2bec-4ac1-b862-c1b5aed3206f.png?resizew=308)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8eceea730492c7927bb34c5d413a7a9.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615ed3b93483bb2f6d86acce159735c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffea72549ea46b2819e827c32307b5b9.png)
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5 . 抛物线
的焦点为F,M是抛物线
上的点,
为坐标原点,若
的外接圆与抛物线
的准线相切,且该圆的面积为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2ce6d23fb52cc513580a8f0e6760c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c176877b59cd7c34fcc0838b05493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.4 | B.8 | C.6 | D.10 |
您最近一年使用:0次
2024-02-16更新
|
270次组卷
|
2卷引用:广东省湛江市2024届高三上学期1月联考数学试题
名校
解题方法
6 . 已知椭圆
的两焦点分别为
的离心率为
,椭圆上有三点
,直线
分别过
的周长为8.
(1)求
的方程;
(2)设点
,求
面积
的表达式(用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704bfc280d817fb77006ee98d4d7e5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c8c8746a97d79afa729753ef8b38ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2304324f76e8efaaec4fa0c6b677879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdba598caa59b8a2a68f6aed5de15525.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2752e086b85f9fbb95010bf771072af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05c029cb5050f5d9257a47b264295dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
您最近一年使用:0次
解题方法
7 . 如图,在直三棱柱
中,
,
,
,
,
分别为
,
的中点,点
在线段
上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/d8f4b256-c719-4781-a032-07d2a19b7fcf.png?resizew=109)
(1)证明:
,
,
,
四点共面;
(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/2f7e49be1f66093e6f73b003d7b686b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45224f7eac9d0cef64bf28d93e7721a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d827945dfbca02e4fd1525cdbab63416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35850dbc661ded6456b70767cc6cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba82c8c1ff7e80e9a6e86cf9cbc6607.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/d8f4b256-c719-4781-a032-07d2a19b7fcf.png?resizew=109)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c2a027965686aede86ec1843b78962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6516ca2f8c8c031de6a9da787518cd.png)
您最近一年使用:0次
8 . 已知椭圆
的左焦点为
,直线
与
交于
,
两点,若
,则
的离心率是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0944c99f34ee41bea845303ed15a7d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b0d4d31cc81571e9f66c227337e2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/a078a9c310b486fbe7d40aa634bde64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
23-24高三上·湖北十堰·期末
9 . 如图,在四棱锥
中,底面
为矩形,
平面
,垂足为
,
为
的中点,
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/ead405b1-a5ea-4f0c-9a40-8b254e0e0c78.png?resizew=196)
(1)证明:
;
(2)若
,
,
与平面
所成的角为60°,求平面
与平面
夹角的余弦值.
![](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/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/af142a6050b54e8b5777a085d4597481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/ead405b1-a5ea-4f0c-9a40-8b254e0e0c78.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585288e61871608f6ff8f7e4a0beafbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49bdf1dcfe6c344dd2442669e72c44b.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/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2024-02-07更新
|
484次组卷
|
4卷引用:广东省湛江市2024届高三上学期1月联考数学试题
广东省湛江市2024届高三上学期1月联考数学试题(已下线)湖北省十堰市2024届高三上学期元月调研考试数学试题福建省十一校2024届高三上学期期末联考数学试题内蒙古赤峰市松山区赤峰学院附属中学2023-2024学年高二上学期1月期末数学试题
解题方法
10 . 在四棱锥
中,底面
是正方形,若
,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/6/af3be501-a740-4d45-9a3d-c86cfbc77261.png?resizew=142)
(1)求四棱锥
的体积;
(2)求直线
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c6caa0455442437177ab9b995df37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3d0f667ef7ca851f514f2e742a8624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a512bcb83a2e952d2f1f877f1ceaa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/6/af3be501-a740-4d45-9a3d-c86cfbc77261.png?resizew=142)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c6caa0455442437177ab9b995df37b.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c550269f3199038726f55cbd281c13a.png)
您最近一年使用:0次