名校
1 . 设
.
(1)解不等式
;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8631b3be45ed183850be36929ab09d2.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5e587ca42942c63cf7ba196a355a81.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f9223bc24df8d429d743692fff7c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1227e4c34d41b99fe800cbe4a105ada.png)
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名校
2 . 在边长为4的菱形
中,
,E是AD的中点,现将
沿EB进行翻折至
的位置,如图所示,F是CP的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/7b18b7d2-93ed-48f5-b95c-18e6cf893129.png?resizew=186)
(1)线段CD上是否存在一点H,使得
.若存在,指出点H的位置,并证明;若不存在,请说明理由;
(2)当
的面积最大时,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6accdd9b317c922d335e44911df357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/7b18b7d2-93ed-48f5-b95c-18e6cf893129.png?resizew=186)
(1)线段CD上是否存在一点H,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ed7b95cde653a700e75624ffd17408.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d493f45d498e52c5e50e01163cfa6e.png)
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3 . 设
的内角A,B,C所对的边分别是a,b,c,面积为
,且__________.在①平面向量
,
,且
;②
;③
这三个条件中任选一个,补充在上面的横线上,并回答下列问题.
(1)求
的值;
(2)若
的外接圆的直径为
,求
的周长.
![](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/a6c0a0cdc06774e8bab945b95d2b50b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8f4f12698dc99da04acdba6ecf8574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b907456faac5d0995bd73f7da94c9b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae8c17bf7558ac42bcbb7689caeb0fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afba5cb1d7916459af3de6311c3acee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a47b376264d525c790ebad49a849c08.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fbbc8f521edab89a7e373287bcfbd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
4 . 双曲线
的左,右焦点分别是
,
,已知
到双曲线H的一条渐近线的距离为
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca29ceeca7071aba6bbbdfebcd410b9.png)
![](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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdfc6a59392d1ac3cd89ddc0308864c.png)
A.4 | B.![]() | C.6 | D.8 |
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解题方法
5 . 若数列
的前n项和为
,
,
,则数列
的通项公式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abde9618774c7e9ba7cacb092cbb5b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4a936dd55e9523baac578a3d92ac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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解题方法
6 . 某校服生产企业为了使设计所用的数据更精准,随机地抽取了6位高中男生的身高和臂展的数据,数据如下表所示:
(1)计算相关系数r(精确到0.01)并说明可用线性回归模型拟合y与x的关系:(若
,则线性相关程度很高,可用线性回归模型拟合.)
(2)建立y关于x的线性回归方程
,并以此估计男装上装XL号(加大号,对应身高
)对应的臂展数据.(结果中
精确到0.1.参考数据:
,
.)
相关系数公式:
,
回归方程
中,
,
.
身高 | 167 | 173 | 174 | 176 | 182 | 184 |
臂展 | 160 | 165 | 173 | 170 | 170 | 182 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb540658171f0b12b6481f6a100eb84.png)
(2)建立y关于x的线性回归方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db6103cb0f1d2bd6b19235d53ee7e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded9def88e32828e313cda96bd38d438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc5505526d11946ca7d3a4421a9e08f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5de22bcb274841afb9b2db89f3aca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36f88b1bccf079467fb0822c95ecd0a.png)
相关系数公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e7e496bab282e2475829358054202.png)
回归方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db6103cb0f1d2bd6b19235d53ee7e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183200de4ff08be4eb636e8169c099a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58291bd91befe1061530246da983727.png)
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7 . 函数
的图象为曲线C,斜率为k的直线l经过点
,则“
”是“l是C的切线”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789c5a8a2fb3b6c4951b762aab04606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a882037b9ce104ecc496e0f31a139361.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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解题方法
8 . 已知
,则满足
的实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154314c8da16ba2a495ed26c21a8cadf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289a101b9f2ba0a5cb4b3537f28ec369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-02-29更新
|
948次组卷
|
3卷引用:四川省2023-2024学年高三下学期诊断性考试数学(理)试题
9 . 已知点
是圆
上的任意一点,点
,线段
的垂直平分线交
于点
,设点
的轨迹为曲线
.直线
与曲线
交于
,
两点,且点
为线段
的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c35d04d6af9c71120d8d35e41bcc5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ce8d4a9d432afe03a988ae2d49c28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd98098a2f3529cf3de2b547996573e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
A.曲线![]() ![]() | B.曲线![]() ![]() |
C.直线![]() ![]() | D.![]() ![]() |
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2024-02-28更新
|
266次组卷
|
2卷引用:四川省攀枝花市普通高中2023-2024学年高二上学期教学质量监测数学试题卷
名校
解题方法
10 . 如图,在几何体
中,
平面
为
上的点,
是
的中点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/a164e176-08b2-43d1-8c35-b6a414a987eb.png?resizew=157)
(1)若
,求证:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd654221ab95fe241d9e0202443f2609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d62dc584a772c35e4843396151d77f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af9b8659fc0f283a3a8ec62d6e30bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/a164e176-08b2-43d1-8c35-b6a414a987eb.png?resizew=157)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8e8f8b75e657565fe628d869b0bde3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53d5c96de34fcf95794e51c2761b671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f713da7dce54965bbef060ad2b507e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
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