1 . 斜拉桥是将梁用若干根斜拉索拉在塔柱上的桥,它由梁、斜拉索和塔柱三部分组成.如图1,这是一座斜拉索大桥,共有10对永久拉索,在索塔两侧对称排列.如图2,已知拉索上端相邻两个锚的间距
约为4m,拉索下端相邻两个锚的间距
均为18m.最短拉索的锚
,
满足
,
,以
所在直线为
轴,
所在直线为
轴,则最长拉索所在直线的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0e87b202d8416430e92a618b5875af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a32ba8b832dd2d0b1743762caa4fbae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7b96bcbbfe1a7b1feae58a38cc053b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c84e2d568e4ffd6e06e9d0aa2016c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d28cbe0b716ea72ce2ae381bfae53a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db883b60884a5af28e081dbafe35d7e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:甘肃省陇南市2023届高三一模理科数学试题
甘肃省陇南市2023届高三一模理科数学试题甘肃省陇南市2023届高三一模文科数学试题(已下线)考点01 直线的倾斜角与斜率 2024届高考数学考点总动员【练】(已下线)模块四 专题8 高考新题型(复杂情景题专训)基础夯实练(人教A)(已下线)第八章 解析几何综合测试B(提升卷)(已下线)黄金卷05
名校
2 . 在直角坐标系xOy中,曲线C的参数方程为
(
为参数),以坐标原点O为极点,x轴的非负半轴为极轴建立极坐标系,直线l的极坐标方程为
.
(1)求C的普通方程和l的直角坐标方程;
(2)动点D在曲线C上,动点A,B均在直线l上,且
,求△ABD面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8582aaf80103290d245329b1af2278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faae5c13920dd1873445836fd2395d3.png)
(1)求C的普通方程和l的直角坐标方程;
(2)动点D在曲线C上,动点A,B均在直线l上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.png)
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解题方法
3 . 已知双曲线
的右焦点为
,以
为圆心,
为半径的圆与双曲线的一条渐近线的两个交点为
.若
,则该双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc4908fa31c032d29c1b1057d7dbaa0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9卷引用:甘肃省金昌市2023届高三二模数学(文)试题
4 . 已知直线l:
被圆C:
所截得的弦长为整数,则满足条件的直线l有______________ 条.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8f50bedc3080565e6f0bc3b2507f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52dccc00e1189661dbcfd1656d49362b.png)
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解题方法
5 . 已知椭圆
的离心率为
,点
是
上一点.
(1)求椭圆
的方程;
(2)设直线
与椭圆
相交于不同的两点
,点
为椭圆
的下顶点,是否存在实数
,使得
?若存在,求出实数
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedafd7766b0b655bef691d828ef04a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b485b62d004d52fb31d6ed99ccb7669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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6 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),在以坐标原点为极点,
轴正半轴为极轴的极坐标系中,直线
的极坐标方程为
.
(1)求曲线
的极坐标方程;
(2)已知点
是曲线
上的任意一点,求点
到直线
的距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b9e6d0457b48516b160af950adf49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8608dc6219c6d5c6dc12663e96f7456.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
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7 . 在平面直角坐标系
中,已知直线
的参数方程为
(
为参数).以坐标原点
为极点,
轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求直线
的普通方程与曲线
的直角坐标方程;
(2)若射线
(其中
,且
,
)与曲线
在
轴上方交于点
,与直线
交于点
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef122c50ffcd0b939a416c65e6638c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b53abdddac76981c5be8956a1e137ba.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c54258755a1798a586a77765e2b0066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147f48c14c4d8e6c08d05f4e90dc4bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278949a1dbbe742ef4dfb4596fd94911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
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名校
8 . 已知函数
,直线
,若直线
与
的图象交于A点,与直线l交于B点,则A,B之间的最短距离是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa3fc30e8ef6ab6f3d33a20bee48d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061af1c7a4480004221e253d813efe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe2d78f43611bad0d264eb3222f2472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.4 | C.![]() | D.8 |
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4卷引用:甘肃省白银市靖远县2023届高三下学期第二次联考文科数学试题
甘肃省白银市靖远县2023届高三下学期第二次联考文科数学试题河南省南阳地区2022-2023学年高二下学期期中热身摸底检测数学试题(已下线)模块一 专题1 【讲】《导数的概念、运算及其几何意义》(人教A2019版)(已下线)模块一 专题1 《导数的概念、运算及其几何意义》(苏教版)
9 . 已知
,
是双曲线
的左、右顶点,P为双曲线上除
,
以外的任意一点,若坐标原点
到直线
,
的距离分别为
,
,则
的取值范围( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5848e50805496263d52dcbde9671a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a1f2f816a51069ca88b1665053c53e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 已知椭圆
的长轴长为4,A,B是其左、右顶点,M是椭圆上异于A,B的动点,且
.
(1)求椭圆C的方程;
(2)若P为直线
上一点,PA,PB分别与椭圆交于C,D两点.
①证明:直线CD过椭圆右焦点
;
②椭圆的左焦点为
,求
的周长是否为定值,若是,求出该定值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e870d323a62a728a87efd0d58a6604.png)
(1)求椭圆C的方程;
(2)若P为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
①证明:直线CD过椭圆右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
②椭圆的左焦点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe9ac6c866f9b2fd2eca32a5da2c298.png)
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6卷引用:甘肃省2023届高三二模文科数学试题
甘肃省2023届高三二模文科数学试题甘肃省武威市凉州区2023届高三下学期第四次诊断考试数学(文)试题甘肃省2023届高三第二次诊断文科数学试题四川省成都市简阳市阳安中学2023届高三模拟训练(一)数学(文科)试题(已下线)数学(全国甲卷文科)(已下线)专题15解析几何(解答题)