1 . 如图,在正四棱台
中,
.
(1)证明:
;
(2)若正四棱台
的高为3,过
的平面α与
平行,求平面α与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d134433600df75f2a5d0f35deb2cac90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/1/3350cb68-89ea-4aa5-99d8-f4d0fd67e8e0.png?resizew=167)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(2)若正四棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
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5卷引用:内蒙古自治区赤峰市红山区2023-2024学年高三上学期开学考试理科数学试题
内蒙古自治区赤峰市红山区2023-2024学年高三上学期开学考试理科数学试题内蒙古赤峰市2024届高三上学期开学考试理科数学试题河北省保定市保定市部分高中2024届高三上学期开学数学试题湖南省株洲市第三中学2024届高三上学期8月月考数学试题(已下线)专题06 二面角4种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)
2 . 已知椭圆
:
的右顶点为
,点
在圆
:
上运动,且
的最大值为
.
(1)求椭圆
的方程;
(2)不经过点
的直线
与
交于
,
两点,且直线
和
的斜率之积为1.求直线
被圆
截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51dc39a9bc383dd10d03188c2874c156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37a608b9a139cc42e3b293585e877bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)不经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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5卷引用:内蒙古自治区赤峰市红山区2023-2024学年高三上学期开学考试理科数学试题
内蒙古自治区赤峰市红山区2023-2024学年高三上学期开学考试理科数学试题内蒙古赤峰市2024届高三上学期开学考试理科数学试题河北省保定市保定市部分高中2024届高三上学期开学数学试题湖南省株洲市第三中学2024届高三上学期8月月考数学试题(已下线)重难点突破09 一类与斜率和、差、商、积问题的探究(四大题型)
3 . 如图所示,在三棱锥
中,
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf9e4218a9f0e48317d6e2c743aa877.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/aa5527e0-2db7-4e74-9e32-9a85775813fd.png?resizew=155)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](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/adf9e4218a9f0e48317d6e2c743aa877.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/aa5527e0-2db7-4e74-9e32-9a85775813fd.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a438393ddfc7da1804baf4932442bb35.png)
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解题方法
4 . 已知命题
,
,若命题
是假命题,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf412e40a85403fd9aeb9a866f874d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21311c91d3a8dcfd439375298447e892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 已知抛物线
第一象限上一点
到其焦点的距离为10,则点
的纵坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.4 | C.![]() | D.8 |
您最近一年使用:0次
6 . 如图所示,“嫦娥五号”月球探测器飞行到月球附近时,首先在以月球球心
为圆心的圆形轨道I上绕月球飞行,然后在
点处变轨进入以
为一个焦点的椭圆轨道II绕月球飞行,最后在
点处变轨进入以
为圆心的圆形轨道III绕月球飞行,设圆形轨道I的半径为
,圆形轨道III的半径为
,则下列结论中正确的序号为( )
①轨道II的焦距为
;
②若
不变,
越大,轨道II的短轴长越小;
③轨道II的长轴长为
;
④若
不变,
越大,轨道II的离心率越大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/bf390483-8d10-4d4b-b4d2-3da8de603ba6.png?resizew=165)
①轨道II的焦距为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24b17abed6bcba3dbbae7471a707293.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
③轨道II的长轴长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44680e496a811023a830d7e9671b2b45.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.①②③ | B.①②④ | C.①③④ | D.②③④ |
您最近一年使用:0次
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|
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4卷引用:内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)理科数学试题
内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)理科数学试题内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)文科数学试题(已下线)专题11椭圆(3个知识点7个拓展2个突破7种题型2个易错点)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)(已下线)2.2.2 椭圆的性质(十八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
名校
解题方法
7 . 设
分别是椭圆
的左、右焦点.
(1)求
的离心率;
(2)过
的直线
与
相交于
两点(
与
轴不平行).
①当
为常数时,若
成等差数列,求直线
的方程;
②当
时.延长
与
相交于另一个点
(
与
轴不垂直),试判断直线
与椭圆
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7638c88f01d609d79947033ed4ff36a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9480823672eaa32df41fbe0a878c36cc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95c1eabf483ce6b4720de9e903c0601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245985a19e6b0744248b026c29ba4b2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a80a5faf097bfc8bafbef34138be0b.png)
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2023-12-28更新
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2卷引用:内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)理科数学试题
8 . 在平面直角坐标系xOy中,已知点
,
,点P满足
.记P的轨迹为M.
(1)求M的方程;
(2)直线
交M于A,B两点,C,D为M上的两点,若四边形ACBD的对角线
,求四边形ACBD面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17618d8d22ebb3fd6835a7eb139b4f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13683e2ecf2164a0adbfdb9923d210a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b64c866c59cf032369c3ac3b48b9f7b.png)
(1)求M的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2e58d7f7f5736a2ca43175ac584dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,已知
是双曲线
的左、右焦点,
为双曲线
上两点,满足
,且
,则双曲线
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecfc79baeded24cefdf622f97198b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e0e75b10dee0b77adec1926f626c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e434f0b426623827d67e39b763225f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/838c3fa5-981c-4c72-96f4-bdbf7cff1373.png?resizew=150)
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2卷引用:内蒙古赤峰市赤峰二中2024届高三上学期第四次月考数学(文)试题
名校
解题方法
10 . 如图,点是抛物线
的焦点,点
、
分别在抛物线
及圆
的实线部分上运动,且
总是平行于
轴,则
的周长的取值范围是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:内蒙古赤峰市赤峰二中2024届高三上学期第四次月考数学(文)试题