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1 . 已知一个装有半瓶水的圆柱形玻璃杯,其底面半径为
,玻璃杯高为
(玻璃厚度忽略不计),其倾斜状态的正视图如图所示,
表示水平桌面.当玻璃杯倾斜时,瓶内水面为椭圆形,阴影部分
为瓶内水的正视图.设
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68f35b8432dad8fad85309c42f4d2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fa622aae9a94f518967806eaec9544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53abbd672b82a02c4975f99fbbd2c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70732cfd9e5e332e0fc1c1575a7ab2d.png)
A.当![]() ![]() |
B.当椭圆的离心率最大时,![]() |
C.当椭圆的焦距为4时,![]() |
D.当![]() |
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2 . 设椭圆C:
的左、右顶点和椭圆
的左、右焦点均为E,F.P是C上的一个动点(异于E,F),已知直线EP交直线
于点A,直线FP交直线
于点B.直线AB与椭圆
交于点M,N,O为坐标原点.
(1)若b为定值,证明:
为定值;
(2)若直线OM,ON的斜率之积恒为
,求b.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8c4b0e11e5894346b27e4656336c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e7a9b887d3dca1953a4f271d7b60a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f09e84f509537abd3dfaa20d7915675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee023dde0cd66b17a3ec5775d4b7d714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(1)若b为定值,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b0ba14e41e306e5633ad4bf1cdedd8.png)
(2)若直线OM,ON的斜率之积恒为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
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解题方法
3 . 已知双曲线
的一条渐近线方程为
,且
与椭圆
有公共的焦点,则
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eeb5e09ab3410da188e486646e52760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3卷引用:河北省邢台市五岳联盟2023-2024学年高二下学期3月月考数学试题
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4 . 已知椭圆
的上焦点为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbd67a6bcd58284ced8577303660aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18bd80c6c4142f68e89f4ad44570b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.5 | C.![]() | D.7 |
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2024-02-23更新
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2卷引用:河北省邢台市2024届高三上学期期末数学试题
解题方法
5 . 已知椭圆的焦点是椭圆
的顶点,椭圆
的焦点也是
的顶点.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654317ca05d25fee978869723ba8d0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c5db73d81da5525d4d35885dac04f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
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6 . 已知椭圆 的左焦点是双曲线
的左顶点,则双曲线的渐近线为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:河北省石家庄市西山学校2023-2024学年高二上学期期末数学试题
河北省石家庄市西山学校2023-2024学年高二上学期期末数学试题重庆市第八中学校2023-2024学年高二上学期期末考试数学试题(已下线)广东省佛山市2024届高三教学质量检测(一)数学试题变式题1-6
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7 . 若椭圆
的焦距为
,则m的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c8522c426af371cb0e2836ed926bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
A.![]() | B.1 | C.3 | D.4 |
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2卷引用:河北省保定市定州市2023-2024学年高二上学期1月期末考试数学试题
解题方法
8 . 已知双曲线
与椭圆
有相同的焦点
,
,且双曲线C与椭圆E在第一象限的交点为P,若
的面积为
,则双曲线C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d43ed708126b25f04caefbd41c8a7bb.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/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知双曲线过点
且与椭圆
有相同的焦点
,
(1)求双曲线的标准方程;
(2)若点
在双曲线上,且
,求
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d95ab554e5ba1078cd4d40425171d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce7445cd0f42c7f88dc3efcb72c7969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48932773034bb6e1651acf140d47822c.png)
(1)求双曲线的标准方程;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4aaec620c8025f9bfe921aae8a04bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9795e5db34dcdc4d5af1eea3d433396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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10 . 已知圆
与坐标轴的交点为
,点P为椭圆
上一点,若
,则点P到
轴的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93fa8dde646dd7ebd481ec663c47e1b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-21更新
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125次组卷
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