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解题方法
1 . 已知双曲线
的离心率为2,顶点到渐近线的距离为
.
(1)求
的方程;
(2)若直线
交
于
两点,
为坐标原点,且
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2 . 已知双曲线
的实半轴长为
,其上焦点到双曲线的一条渐近线的距离为3,则双曲线
的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5651ad312b44662f444de95a6318826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:江西省宜丰中学2024届高三下学期模拟预测数学试卷
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3 . 平面直角坐标系中,任意两点
,
,定义
为“A,B两点间的距离”,定义
为“A,B两点间的曼哈顿距离”,已知
为坐标原点,
为平面直角坐标系中的动点,且
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ddb75af40f5eaaf455d676ea796cde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5f094721b6e9bcbdf553d744660b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1a9821a00b71f6b7d7a76d91b3f810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977eae533aa55fd5ce37c7c00994eafa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43453740b1c08738a33d213951308ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cfd4323427a5ad881ffda2816d42c55.png)
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4 . 圆
与圆
的公共弦长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d545fc27fb7a6c815b9558d09cd4b838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d740adc4df4799d70bfa3b9b68d184.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知实数
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf42e16b6c476fde7aa16f25bf753cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11f02953023c8e55ebf60c5e4a4dec4.png)
A.![]() | B.2 | C.![]() | D.4 |
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解题方法
6 . 若点
是曲线
上任意一点,则点
到直线
的最小距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dab884802016b29f54c0e1c9efe43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c966320d637cab491c67425ef1338966.png)
A.1 | B.![]() | C.![]() | D.![]() |
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|
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7 . 设P为直线
上的动点,PA,PB为圆C:
的两条切线,切点分别为A,B,则四边形
的周长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42498f6e0fc9a61c9857b70a87f02c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a353d1a988596880c0a48c2303d20c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5e6be4c100935913a35fa89967ccdf.png)
A.3 | B.![]() | C.4 | D.![]() |
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8 . 已知顺次连接
的三角形与圆
总有公共点.则圆半径的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048147195fe75bebc3cab7160463b838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8805de7a92c61dca34ef15a8a9355e7.png)
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9 . 已知抛物线
的焦点
到准线
的距离为6.
(1)求抛物线
的方程;
(2)已知点
,
是
上的两点,
是抛物线
上一动点,原点到直线PA,PB的距离均为3,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba379e55fcf7ceee03de7d43001eeb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8e73eb063f711a944a9843bdd55ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1858507c21102b33fadc14d42aa38441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
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|
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10 . 在平面直角坐标系
中,点
在圆
(常数
)上,点
在直线
上.平面内一点
满足
(常数
,常数
),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd432589cb00c29cac1806288e99ed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ba6b6aa6c3f9faba6b03bc193a6e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bc630dcbf70024053892fde95a075a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231e36aa69064f46b6d04f449c9929b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c98c0ec4c99989333faa478a946985.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当常数![]() ![]() ![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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|
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