名校
解题方法
1 . 已知椭圆
:
,
,
为其左、右焦点,
为椭圆
上任一点,
的重心为G,I是内心,且有
(其中
为实数),椭圆
的离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
_____________ .
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e2f489e3e6da27895647926e4f4ed9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
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2卷引用:山西省汾阳市育才中学2022-2023学年高二上学期第二次学情检测数学试题
名校
解题方法
2 . 如图,在棱长为1的正方体
中,E,F分别为棱
,BD的中点,点G在CD上,且
.
所成角的余弦值;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0635059fd390592d1851dfe56c72cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fec5bd77cfc1313bc200480cc66c766.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
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5卷引用:山西省汾阳市育才中学2022-2023学年高二上学期第二次学情检测数学试题
解题方法
3 . 已知椭圆
的左、右焦点分别为
、
,点P,Q分别是以线段
为直径的圆与椭圆C在第一象限内和第三象限内的一个交点,若
,则椭圆C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/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221038c591d282ff8fb69e5bd6b80f3c.png)
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3卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
解题方法
4 . 在底面边长为2的正四棱柱
中,
,则
与平面
所成角的正弦值为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
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2卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
解题方法
5 . 已知椭圆
的离心率为
,左右焦点分别为
,点
在椭圆上.
(1)求椭圆C的标准方程;
(2)过点
作斜率为
的直线与椭圆C相交于A,B两点,过原点O作直线
的垂线,垂足为D.若点D恰好是
与A的中点,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558494a4594f69b0b679d8d588006efa.png)
(1)求椭圆C的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb166b53a49e393871bcb14a528792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
名校
6 . 已知抛物线
经过点
(a为正数),F为抛物线的焦点,且
.
(1)求抛物线C的标准方程;
(2)若点Q为抛物线C上一动点,点M为线段
的中点,求点M的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b778f0d24cca867e4a58c9ffb98a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c35531b38d16272285f5b84c713dc5.png)
(1)求抛物线C的标准方程;
(2)若点Q为抛物线C上一动点,点M为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
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4卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
名校
解题方法
7 . 已知双曲线
的一条渐近线的倾斜角为
,右焦点F到其中一条渐近线的距离为1.
(1)求双曲线C的标准方程;
(2)已知直线l与x轴不垂直且斜率不为0,直线l与双曲线C交于M,N两点.点M关于x轴的对称点为
,若
三点共线,证明:直线l经过x轴上的一个定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
(1)求双曲线C的标准方程;
(2)已知直线l与x轴不垂直且斜率不为0,直线l与双曲线C交于M,N两点.点M关于x轴的对称点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f98b039f43f5590e6ac30f36d7460b5.png)
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4卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
8 . 如图,在正三棱柱
中,底面边长为2,
,
为
的中点,点
在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/fd353557-01f3-468d-83c4-ca2ab18972ff.png?resizew=139)
(1)证明:
平面
;
(2)求平面
与平面
的夹角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97f616f0f32beed421129cbbb4db8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8feb05b8c76753d5bd053f254085cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/fd353557-01f3-468d-83c4-ca2ab18972ff.png?resizew=139)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6ab0386dde0643de8caf33f946072f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
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2卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
解题方法
9 . 如图,已知四棱锥
的底面
是平行四边形,
,且
底面
,若点D到平面
的距离为
,则( )
![](https://img.xkw.com/dksih/QBM/2022/11/10/3106562317172736/3106892715835392/STEM/9b3556465c6c4a2f968210c414df9acf.png?resizew=189)
![](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/3830259f36d7a7017c1a488847b1f517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49b0417461083c137abbb30d5cbc181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c55e4f3eda94bc505f103b10bc1fee7.png)
![](https://img.xkw.com/dksih/QBM/2022/11/10/3106562317172736/3106892715835392/STEM/9b3556465c6c4a2f968210c414df9acf.png?resizew=189)
A.![]() | B.![]() |
C.四棱锥![]() ![]() | D.三棱锥![]() ![]() |
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2卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题
名校
解题方法
10 . 过点
的等轴双曲线的标准方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8卷引用:山西省吕梁市孝义市2022-2023学年高二上学期期中数学试题