1 . 已知点
到抛物线
的焦点
的距离为
,则该抛物线的准线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50edfb9ed0d50d6f35ad6a130208d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f86f7e2b79b5b3c53e8e0863e1b4ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知
为双曲线
的一个焦点,则
的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967dc76338e277e690e0e524d4179e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250c8584ca99fc1ac122f271987d410a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . (多选)满足下列条件的点P的轨迹一定在双曲线上的有( )
A.A(2,0),B(-2,3),|PA-PB|=5 |
B.A(2,0),B(-2,0),kPAkPB=2 |
C.A(2,0),B(-2,0),kPAkPB=1 |
D.A(2,0),B(-2,3),PA-PB=2 |
您最近一年使用:0次
2024-03-05更新
|
64次组卷
|
3卷引用:河北省邢台市第一中学2023-2024学年高二下学期期中测试数学试题
解题方法
4 . 已知椭圆
的左、右焦点分别为
,上顶点为
,离心率为
为
上关于原点对称的两点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb0ef5e6c3771175aff1b8fc9e17110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4964c014567ab3586af0b762e046dcbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() ![]() |
B.![]() |
C.四边形![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-03-04更新
|
256次组卷
|
2卷引用:河北省邢台市2023-2024学年高二上学期1月期末数学试题
5 . 已知
为抛物线
上的两点,
是边长为
的等边三角形,其中
为坐标原点.
(1)求
的方程;
(2)过
的焦点
作圆
的两条切线
,且
与
分别交于点
和
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6093eebca8f3ff82ce9298feb197e955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dac63b3d222a4cff8691da2d0d4489d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4b833fb7dd03c34ac40c664cd8483d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61cdf7abc61fd3a5c26ee985d87cdf6.png)
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名校
6 . 已知圆
被
轴分成两段弧,弧长之比为
.
(1)求
;
(2)若动点
到坐标原点
的距离等于
为圆
上一动点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e0b90358f402adc43a1197a33bea99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84783b6ba0f36789519816101a437f46.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
(2)若动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5df932a6f83f054ab8307e1b57af143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
您最近一年使用:0次
名校
解题方法
7 . 在正方体
中,
分别在棱
上,
,平面
与棱
交于点
,则直线
与
所成角的余弦值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ed890ce507890d92fb553c679bf893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfc15063d3701e38260532e3bbcad89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
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8 . 已知
是抛物线
的焦点,
是
上的一个动点,设
到
轴的距离为
到点
的距离为
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ac6188f40414f76bc754dee4a75809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ba9e2f2932b3cfd0e707142ab2c915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e358239cdfa5078bcecf62bb1739577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a4b32d388558eb9a9e4f0f2dd57c09.png)
您最近一年使用:0次
名校
9 . 已知
分别是双曲线
的左、右焦点,第二象限的点
在
上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5017295c83c984505fcab824b99c53a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知
分别是椭圆
的左、右焦点,点
在椭圆
上,且
,则
的离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c6162828793e697cb1ad643b287c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c2ba356b73210d99f0e11afdb2bb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次