1 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d107ada5b88073d42481ba8dce1316de.png)
,若
,
恒成立,则正数m的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d107ada5b88073d42481ba8dce1316de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344cc24b575f4fd1ea7fe8ce5612fa9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71bbd8f8c572698e1b646433214a8638.png)
A.![]() | B.1 | C.![]() | D.e |
您最近一年使用:0次
名校
解题方法
2 . 如图,已知双曲线
的左,右焦点分别为
,
,正六边形
的一边
的中点恰好在双曲线
上,则双曲线
的离心率是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0d435f48d6406a78c6434693862ff7.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/032d0f2469c784fdc08faf5ee7884448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/1dbdb72e-d7b1-46a3-a16b-ca36ffc2350d.png?resizew=137)
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2022-11-04更新
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738次组卷
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4卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
广西北海市2023届高三上学期第一次模拟考试数学(理)试题广东省广州市西外2022-2023学年高二上学期期末数学试题(已下线)江西省五市九校协作体2023届高三第一次联考文科数学试题变式题16-20(已下线)广东实验中学2024届高三上学期第一次阶段考试数学试题变式题15-18
解题方法
3 . 已知椭圆
的左、右焦点分别为
,
,点
在椭圆
上,且椭圆
的离心率为
.
(1)求椭圆
的标准方程;
(2)相互垂直且斜率存在的直线
,
都过点
,直线
与椭圆相交于
、
两点,直线
与椭圆相交于
、
两点,点
为线段
的中点,点
为线段
的中点,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/c59a1d3e6a94f1bcea354d37318fd003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)相互垂直且斜率存在的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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2022-11-04更新
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4卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
广西北海市2023届高三上学期第一次模拟考试数学(理)试题广西北海市2023届高三上学期第一次模拟考试数学(文)试题(已下线)河南省2023届高三3月联考理科数学试题陕西省铜川市2024届高三第二次质量检测数学(理科)试题
名校
解题方法
4 . 如图,在直三棱柱
中,
,E为
的中点,F为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/11/2/3101160789360640/3102278856802304/STEM/67755079c1a64c7eab5dc1c2b5487aa3.png?resizew=212)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
;
(2)若
,求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2022/11/2/3101160789360640/3102278856802304/STEM/67755079c1a64c7eab5dc1c2b5487aa3.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96a6b20a35af7755e5d90789ea862da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2022-11-04更新
|
617次组卷
|
2卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
5 . 已知集合
,集合
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88004856d376f04aeb52a321d8af31bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1c1dfb11b420294b08defce03bc866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-04更新
|
353次组卷
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2卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
解题方法
6 .
的展开式中
的系数为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f565bf98c3d534e561d96a21c1183f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3336c8ed5361c10c37300e41e03f9f2f.png)
您最近一年使用:0次
2022-11-04更新
|
481次组卷
|
2卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
解题方法
7 . 已知向量
是单位向量,向量
,且
,则
与
的夹角为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbca4a9c7d88a170a137f081abb73ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a3970668f6ead9fc1557407da68873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61bb62125b785465ca9c624be2271a0b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab989f85a681b41c29465d4be74b789f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebab4c7345a254d1d47d4b4587d9317.png)
您最近一年使用:0次
2022-11-04更新
|
469次组卷
|
5卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
名校
解题方法
9 . 已知
的内角A,B,C的对边分别为a,b,c,且
.
(1)求角B的大小;
(2)若
,求
周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce86c698bdb6d91a182516a6abce0b86.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-11-04更新
|
567次组卷
|
3卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题
名校
解题方法
10 . 如图所示,阴影部分由四个全等的三角形组成,每个三角形是腰长等于圆的半径,顶角为
的等腰三角形.如果在圆内随机取一点,那么该点落到阴影部分内的概率为
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/632639a8-285d-4b2e-b153-fb5dbf55a985.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b202870415ad76362476c8f122729d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f550b3f2e3571c6fb57cb524ed55f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/632639a8-285d-4b2e-b153-fb5dbf55a985.png?resizew=147)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-04更新
|
459次组卷
|
4卷引用:广西北海市2023届高三上学期第一次模拟考试数学(理)试题