已知双曲线
的左焦点为
,
为
右支上的动点,过
作
的一条渐近线的垂线,垂足为
,
为坐标原点,当
最小时,
,
,
成等差数列,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5315ad9beacae57ca9b0933f46c48058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31318156d1d867a8e526518c80ee77f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaaa66fd103faa80274d27d97415019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349e2bbc48f7237b885feab94c1678f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c910f6dba967f26d327794133e848b.png)
A.若![]() ![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
更新时间:2021-01-27 22:55:51
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【推荐1】已知
、
,点
为曲线
上动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3326927e4b01e981a19109633141e06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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【推荐2】已知点
,点
是双曲线
:
左支上的动点,
为其右焦点,
是圆
:
上的动点,直线
交双曲线右支于
点(
为坐标原点),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2595e01e8751886a27862cce04e2d1.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/7c58fa4a337f0b81b991fb32e8e6e3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5757551de5911dd9d207abeffbbf392d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.过点![]() ![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.过点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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解题方法
【推荐1】已知
,
为双曲线
:
的左、右焦点,点
满足
,N为双曲线C的右支上的一个动点,O为坐标原点,则()
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea7fdd0a77164d3dc0c032e6cb90b30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8e445500f8a9de2c8ead8b2f24b1fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35b148c043ddff87cc37c8891138187.png)
A.双曲线C的焦距为4 |
B.直线![]() |
C.![]() |
D.![]() |
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解题方法
【推荐2】在平面直角坐标系
中,已知双曲线
的离心率为
,且双曲线
的右焦点在直线
上,
、
分别是双曲线
的左、右顶点,点
是双曲线
的右支上位于第一象限的动点,记
、
的斜率分别为
、
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41faaa1f469496caf1a125d672c80d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec1776bfd268b6b807ac573b4a87ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ac885a3084ce23d597c1fffc8bebbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/eec1776bfd268b6b807ac573b4a87ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
A.双曲线![]() ![]() | B.双曲线![]() ![]() |
C.![]() ![]() | D.存在点![]() ![]() |
您最近一年使用:0次
【推荐1】已知双曲线
的左、右焦点分别为
为坐标原点,A,B为双曲线上两点,且满足
,
为C上异于A,B的动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abfde9ec4a22b0daa1ea8cb65a192ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447120a38d5e15d7a01d36231d648d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3ff4b03ad2a29a648e9bdb403696d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.C的渐近线方程为![]() |
B.双曲线C的焦点到渐近线的距离为![]() |
C.当![]() ![]() |
D.设MA,MB的斜率分别为![]() ![]() |
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【推荐2】已知双曲线C:
的左焦点为F,P为C右支上的动点,过P作C的一条渐近线的垂线,垂足为A,O为坐标原点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5dae637ca6fdc4d2480fb2cef387500.png)
A.点F到C的一条渐近线的距离为2 |
B.双曲线C的离心率为![]() |
C.则P到C的两条渐近线的距离之积大于4 |
D.当![]() ![]() ![]() |
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【推荐3】已知
,
分别为双曲线
:
的左、右焦点,
为双曲线
的渐近线在第一象限部分上的一点,线段
与双曲线交点为
,且
,
为坐标原点,则下列结论正确的是( )
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.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/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af2a4dd34da33bf633a6f94ea93b9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() |
B.双曲线![]() ![]() |
C.![]() |
D.若![]() ![]() ![]() |
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解题方法
【推荐1】已知O为坐标原点,双曲线C:
(
,
)的左顶点为A,右焦点为F,过A且平行于y轴的直线与C的一条渐近线交于点B,过B且平行于x轴的直线与y轴交于点D,若
,则C的离心率等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f23bdf1160fe67c1b9b28ebb812e83.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84d316b10430afac5b0c065f31e1b2c.png)
分别是双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
的左、右焦点,A为左顶点,P为双曲线右支上一点,若
且
的最小内角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84d316b10430afac5b0c065f31e1b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d3f9d8344e1c727fbbed5421daaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b6adab224b9e3552b032249e6149671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
A.双曲线的离心率![]() | B.双曲线的渐近线方程为![]() |
C.![]() | D.直线![]() |
您最近一年使用:0次