已知
为双曲线
的右焦点,
为坐标原点,
为双曲线
的斜率为正的渐近线与直线
为双曲线
的半焦距
的交点,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1429d56608fb92f49dc712c2f3429e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2fce400ddeb68d0ff118a9a1ba2449.png)
A.0 | B.![]() | C.2 | D.![]() |
更新时间:2023-03-28 22:09:58
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单选题
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适中
(0.65)
【推荐1】已知单位向量
,
,
,
满足:
,
向量
(
),则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec655f610928ca21831e26645a21e99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9fd98adf04698b8252925545a601218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307c813f42759a96b3c70505c81fadbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68ba13bc08adb31b09f13c0050588d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3da4cd32573ab7dac6c5e87a13a8e4.png)
A.![]() | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知向量
,
,若
与
垂直,则实数x的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b31aebd84a09c58eda7b46872c553c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897a9dd365a6110e1836fb5bc2219a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614b003a9f14fed694128f681b2f1d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
A.﹣4 | B.﹣2 | C.4 | D.2 |
您最近一年使用:0次
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适中
(0.65)
名校
解题方法
【推荐1】已知双曲线
的离心率
,过焦点
作双曲线
的一条渐近线的垂线,垂足为
,直线
交另一条渐近线于
,则
等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7472bd8c9a477f1863bb6c3cbf953c26.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35dc962d118cd70c761f7870b3e59c2d.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】已知双曲线
的离心率为
,则双曲线
的两条渐近线的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3561e3400ca4e93c8846761e0fb7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次