1 . 已知椭圆
的对称中心为坐标原点,焦点在坐标轴上,若椭圆的长轴长为10,短半轴长为4,则椭圆
的标准方程可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
2 . 已知某曲线方程为
,其中a,
,a与b可以相等,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351d429d1e666f9bf4b1e4b653b3ef4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9bc37fb76a52e7b9aee79242e1423b.png)
A.该曲线为圆的概率为![]() | B.该曲线为椭圆的概率为![]() |
C.该曲线为双曲线的概率为![]() | D.该曲线为抛物线的概率为![]() |
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2024·全国·模拟预测
3 . 已知
为坐标原点,抛物线
上一点
到其准线的距离为3,过
的焦点
的直线交
于
两点,则下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7251452d9c6c09b409f734cc48f4d5.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
A.过点![]() ![]() |
B.当![]() ![]() |
C.![]() |
D.![]() ![]() |
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4 . 如图,已知直线
与抛物线
交于
两点,且
交
于点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd436ca3680ce9f9cba4b052ccdd9c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
A.若点![]() ![]() ![]() |
B.直线![]() ![]() |
C.点![]() ![]() |
D.![]() ![]() |
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2024-03-22更新
|
287次组卷
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5 . 已知双曲线
:
的左、右焦点分别为
,
,点
为双曲线
右支上的动点,过点
作两渐近线的垂线,垂足分别为A,
.若圆
与双曲线
的渐近线相切,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fbca1869bfbaf3d55c6a01d3ebec1f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9df0d79e42d86b0def4caa10dffa75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.双曲线的渐近线方程为![]() |
B.双曲线![]() ![]() |
C.当点![]() ![]() ![]() ![]() |
D.![]() ![]() |
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6 . 在平面直角坐标系
中,方程
对应的曲线为
,则( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f230657098b75df787a0317fb2d932c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.曲线![]() |
B.曲线![]() |
C.曲线![]() ![]() |
D.曲线![]() ![]() ![]() |
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7 . 已知椭圆C:
的左、右两个焦点分别为
,
,短轴的上、下两个端点分别为
,
,
的面积为1,离心率为
,点P是C上除长轴和短轴端点外的任意一点,
的平分线交C的长轴于点M,则( )
![](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/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0db6ab5cca51a0f7fcea3980d60262c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
A.椭圆的焦距等于短半轴长 |
B.![]() |
C.![]() |
D.![]() ![]() |
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|
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|
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8 . 已知点P为双曲线
所在平面内一点,
分别为C的左、右焦点,
,线段
分别交双曲线于
两点,
,
.设双曲线的离心率为e,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475a3fdc7b27d5ffa8c864dc478903d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e0064baf916b4facb0dec1fac665e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d82387e48eafb286785a21a8d4150f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f10e57f5315903408414d8381083d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8760532beedc51fe508759cd545ca1.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.![]() |
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解题方法
9 . 已知双曲线C:
的左、右焦点分别是
,过右焦点
的直线
交双曲线右支于
两点,
的内切圆圆心为M,半径为
,
的内切圆圆心为N,半径为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cfd997d3b66a3b8f7731b26f0ab0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47444b5fbc4252516d54263062e47c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
A.直线![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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10 . 已知双曲线
:
的焦点在
轴上,且实轴长是虚轴长的3倍,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a33adcbed89e81a6f835f8fc9291cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.双曲线![]() | B.双曲线![]() |
C.双曲线![]() ![]() | D.双曲线![]() ![]() |
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