解题方法
1 . 已知O为坐标原点,椭圆
左、右焦点分别为
,短轴长为
,过
的直线
与椭圆
交于
两点,
的周长为8.
(1)求
的方程;
(2)若直线l与Ω交于A,B两点,且
,求|AB|的最小值;
(3)已知点P是椭圆Ω上的动点,是否存在定圆O:x2+y2=r2(r>0),使得当过点P能作圆O的两条切线PM,PN时(其中M,N分别是两切线与C的另一交点),总满足|PM|=|PN|?若存在,求出圆O的半径r:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51be38237df3982ee2615a2e20830e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c084b48b27ce17a659fb3e9b79d684.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
(2)若直线l与Ω交于A,B两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc11e7549cfce9220e70250ac943e457.png)
(3)已知点P是椭圆Ω上的动点,是否存在定圆O:x2+y2=r2(r>0),使得当过点P能作圆O的两条切线PM,PN时(其中M,N分别是两切线与C的另一交点),总满足|PM|=|PN|?若存在,求出圆O的半径r:若不存在,请说明理由.
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2 . 在①
,②
,③
,这三个条件中任选一个补充在下面的横线上,并加以解答.
在
中,角
,
,
所对的边分别为
,
,
,且 .
(1)求角
的大小;
(2)若
为锐角三角形,
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef8ad9f9cf060771d47d36cde93afae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5455c52de0aef08eba4c104f99efeab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949400f9ba875a3e230063573a423e74.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,角A,B,C所对的边分别为a,b,c,
.
(1)求角C的大小;
(2)若
,
的面积为
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2117bffd2960ce503af157058f7ff98a.png)
(1)求角C的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-06-17更新
|
732次组卷
|
3卷引用:四川省泸州高级中学校2023-2024学年高一下学期5月期中考试数学试题
四川省泸州高级中学校2023-2024学年高一下学期5月期中考试数学试题陕西省西安市南开高级中学2023-2024学年高一下学期五月月考数学试卷(已下线)高一下期末考前押题卷01-期末考点大串讲(人教B版2019)
名校
解题方法
4 . 已知函数
.
(1)求
的最小正周期和单调减区间;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd07187d7e9a6912602b23633b71cfdf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0926788f467f1259d5380c5a7e40da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e039219978242ec380e66de6cf9bab8.png)
您最近一年使用:0次
2024-06-12更新
|
624次组卷
|
2卷引用:四川省泸州市泸县第五中学2023-2024学年高一下学期6月月考数学试题
名校
解题方法
5 . 已知函数
.
在一个周期上的图象(完成表格后描点连线);
(2)若
且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8a1119ceb5cd8291504bead1a6730d.png)
x | |||||
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc90475c3571f0940112627652778c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32ab50ffb5cde43b7efe86c6e3ad583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5ff5a2e7663e6a21ccea3149a10113.png)
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6 . 已知
分别是与
轴、
轴方向相同的单位向量,
,
(1)若
与
垂直,求实数
的值;
(2)若
的夹角为锐角,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f2ac866029e869171b8f9223c40ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f713e4ceff72dee89d75a00c7b09fb46.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d108e523626be0b40be9b3543ce12524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e49d17d4ad440d37c6f4bc8daba25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
7 . 已知向量
,
,
.
(1)求函数
的解析式及在区间
的单调递增区间;
(2)若函数
在区间
上有且只有两个零点,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2832054d3699cf6c7bca8ed41c1e254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37c98f3395f1826f1241b0ea11690c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a12ac0b3ff0ba4155d849c631fdc6a86.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cfcbb5c5950e18a8452b38bb17036.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbae0d22d931ac42b565c7990764a2c1.png)
您最近一年使用:0次
名校
解题方法
8 . 已知向量
,
.
(1)若
,求
;
(2)若
,
,求
与
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d4806428d45917cde867c566fc5f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34a97e4d59095d79e6344d04b0f927b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7466f3ffa97e826620e45cd4134dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0212ab68627919b1d22ac348a3e849.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab24d183a2259e6c5bc9fe807db99255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9997c0f3590f8ad54c282dee332235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afc391105ca04c187e6be5bd77acc78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
9 . 如图,已知双曲线
的右焦点
,点
分别在C的两条渐近线上,
轴,
(O为坐标原点).
(2)过C上一点
的直线
与直线AF相交于点M,与直线
相交于点
,证明点
在
上移动时,
恒为定值,并求此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff42907ca313dd0e54b4cd9b29ff339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323232ab36943d1d5d2831d70ffcff87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729ead8df407d5e5a1314808c9f6038.png)
(2)过C上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbec8b46231e412ddce55cc96634e182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d599059e6b2c918ab15ee22611b6962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/048b1fb28fe545b954645c0132303680.png)
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10 . 某地区为了解居民体育锻炼达标情况与性别之间的关系,随机调查了600位居民,得到如下数据:
(1)完成
列联表.根据小概率值
的独立性检验,能否认为体育锻炼达标与性别有关联?
(2)若体育锻炼达标的居民体能测试合格的概率为
,体育锻炼未达标的居民体能测试合格的概率为
.用上表中居民体育达标的频率估计该地区居民体育达标的概率,从该地区居民中随机抽取3人参加体能测试,求3人中合格的人数
的分布列及期望.(
对应值见下表.
,
)
不达标 | 达标 | 合计 | |
男 | 300 | ||
女 | 100 | 300 | |
合计 | 450 | 600 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdaf501302beeec9d077be02909e3bd.png)
(2)若体育锻炼达标的居民体能测试合格的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072711e3fd17acb64c6a9b159969b18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d565fcd226016c43b574629fde51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | 0.1 | 0.05 | 0.01 |
![]() | 2.706 | 3.841 | 6.635 |
您最近一年使用:0次
2024-05-14更新
|
803次组卷
|
2卷引用:2024届四川省泸州市高三教学情况调研数学试题