名校
解题方法
1 . 已知椭圆
的左、右焦点分别为
,
,点
,
在椭圆
上,其中
,
,若
,
,则椭圆
的离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e846ab6edbf163396b4e20069fe29447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6270bb08b90f72d5671ab8225f356c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcdb7671e6056d842cdc88fb523467f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1be28a55fc5e5f2270b0ba44bcefce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e00831b3872c063da92aebde13a0631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:辽宁省大连市滨城高中联盟2021-2022学年高二上学期期中数学试题
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2 . 已知命题“菱形的对角线互相平分”,将其改写成“若p,则q”形式为___________ .(格式正确,描述清楚即可)
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5卷引用:辽宁省朝阳市建平县普通高中2021-2022学年高一上学期期中联考数学试题
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3 . 在空间直角坐标系Oxyz中,点P(1,2,3)关于
平面的对称点坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知线段
在坐标轴上滑动,点A在y轴上滑动(包括原点),点B在x轴上滑动(包括原点).若
,记M的轨迹为曲线C.
(1)求C的方程,并说明C是什么曲线?
(2)点P在曲线C上,且在第一象限,过P作椭圆
的切线,切点分别为A,B.求
面积的取值范围.
注;过椭圆
外一点
作椭圆的切线,切点为A,B.则AB的直线方程为:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b661c79b7b866204fd4084c37bdd4b.png)
(1)求C的方程,并说明C是什么曲线?
(2)点P在曲线C上,且在第一象限,过P作椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
注;过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c780c0b3b61d8e048d572ecbb017406.png)
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5 . 如图,已知正三棱柱
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070847488/STEM/c971b28e-99e4-4b81-b4db-ae194203920a.png?resizew=201)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070847488/STEM/d7f6a9cc-131e-4743-b514-b59d2aec78f1.png?resizew=208)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070847488/STEM/53ac4e46-cd0b-4ea3-a992-2c0ecc74ae17.png?resizew=202)
(1)若
,求证:
;
(2)若平面
平面
,且D为
中点,E为
中点.求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460fc70f7b9e185802d61e503bd23bbc.png)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070847488/STEM/c971b28e-99e4-4b81-b4db-ae194203920a.png?resizew=201)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070847488/STEM/d7f6a9cc-131e-4743-b514-b59d2aec78f1.png?resizew=208)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070847488/STEM/53ac4e46-cd0b-4ea3-a992-2c0ecc74ae17.png?resizew=202)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85408399beef4bf0fb55a461e62dfabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3164cea98c4c6022e1559e202fbcc4e7.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d138354c4e021ac8ae2a2fb176ca14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca86d70680cb33c35d61e4960031fceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6a345782d4c6cf00d28e215a99cf5b0.png)
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解题方法
6 . 已知椭圆C:
,
,且椭圆C右焦点为
,O为坐标原点.
(1)求椭圆C的方程;
(2)过
的直线l交椭圆C于A,B两点,若
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7840b6cffe203d28d6c14e526ffdeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
(1)求椭圆C的方程;
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154f8fb6fb50b9241187737c2fc99290.png)
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2021-11-26更新
|
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2卷引用:辽宁省实验中学2021-2022学年高二上学期期中数学试题
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解题方法
7 . 如图,已知正方体
的棱长为1,且P在平面
内,有
.
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070470656/STEM/fc9c1fb3d5ca44228534318f21ea0709.png?resizew=317)
(1)若
为棱
的中点,求
到平面
的距离;
(2)设直线
与平面
所成角的为θ,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d10f2db7289ff1ec65c47d9af77a9c0.png)
![](https://img.xkw.com/dksih/QBM/2021/11/22/2856793815711744/2859586070470656/STEM/fc9c1fb3d5ca44228534318f21ea0709.png?resizew=317)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f921b462ee12ad5749ea45d75f609b7.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c10cd9fe2cec68681f6246f23420f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f921b462ee12ad5749ea45d75f609b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
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解题方法
8 . 如图,已知三棱锥
满足DA⊥底面ABC,
,
,E为AD中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/18fb7397-2559-45e3-bf04-59e3448de8e5.png?resizew=193)
(1)求E与F两点的距离;
(2)求异面直线EB与FD所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178a27068cf5517ad64f211af10256ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802941607869601748f8efcaa364afc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459a3552f58b707662912b6fcbe3cc9e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/18fb7397-2559-45e3-bf04-59e3448de8e5.png?resizew=193)
(1)求E与F两点的距离;
(2)求异面直线EB与FD所成角的余弦值.
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9 . 已知椭圆C:
的左右焦点为
,
.点A,B在椭圆上(A,B可以重合)且
(
),则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33be9e83d912aab5c216ace6adeea3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c52380fdc67b973c0d78e4fe9f4faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43a9e1450c97130e33853b90b0a78e8.png)
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2卷引用:辽宁省实验中学2021-2022学年高二上学期期中数学试题
10 . 双纽线也称伯努利双纽线,是指定线段
长度为
,动点
满足
,那么
的轨迹称为双纽线.已知曲线
为双纽线,下列选项判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a152e9b38421522d130a647ab9b45a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1fb9bfb48550aad736caf64776df8e.png)
A.曲线![]() ![]() |
B.曲线![]() ![]() |
C.曲线![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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2卷引用:辽宁省实验中学2021-2022学年高二上学期期中数学试题