名校
解题方法
1 . 设
为数列
的前
项和,
,
,则
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
_____ ;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6764fe32f1ad8d4731c147ae413d6e41.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61edbb55a806ba1e1a7c1889f0454b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6764fe32f1ad8d4731c147ae413d6e41.png)
您最近一年使用:0次
名校
解题方法
2 . 已知抛物线E:
的焦点为F,其准线与x轴的交点为C,过点C的直线l与抛物线E交于A,B两点(A点位于B点右方).若
为
的角平分线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb51b9591885e76530a5e2f4283a4db.png)
______ ;直线l的斜率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed24d7acba0b3a7ebf4d520296424a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb51b9591885e76530a5e2f4283a4db.png)
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3 . 已知
是定义在
上的函数,且对任意的
,同时满足下列条件:①
;②
,其中
是大于1的常数.记
,且对任意的
,存在常数
,恒有
,则
的一个值是__________ ;若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb6343d83fcbf9ef2a2e3d63bcd7bf66.png)
__________
.(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46074d28f2f23e5026fff76594e32ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b26b0960f01533ae7c120f0d9831392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafeae53499e1b6935c7f32d0a652516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b452e6fc74f3fd4dca0d7f68e719261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1017c3c983d190798812f082957888cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6691894fe61c7e78b94df72b8379130d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb6343d83fcbf9ef2a2e3d63bcd7bf66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b63663851c6911a194e531e6e7bd5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
4 . 已知函数
,任取
,定义集合
,点
满足
. 设
分别表示集合
中元素的最大值和最小值,记
,试解答 以下问题:
(1)若函数
,则
___ ;
(2)若函数
,则
的最小正周期为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c31ba2787bc36c28c1a3a54e93432cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752cdf76ae4ff6439f513e8bdf3f60cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9723d753c0d5df723a4308a79e5a876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79410ed94f30c4da60838abfa1f01f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2b282da990e7bd3f05d4026ef5e394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3215494dccf60336e9f7740d19fcbc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f26d721b107f8b2bc88f3eb0f42c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be7b58c2b38144b1891d4840b8047cd.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c64ab61f03db328b8860ff20c6b9b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8798ef183db1c22522f2edefd9ba7930.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c90a21879ef3ff035d9790b24c0a535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0999d7e1264bf85be74b29cd9e34db.png)
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2024高三下·全国·专题练习
名校
5 . 了解某中学学生的身高情况,采用分层随机抽样的方法抽取了30名男生,20名女生.已知男生身高的平均数为170cm,方差为16,女生身高的平均数为165 cm,方差为25,则可估计该校学生身高的平均数为______ cm,方差为______ .
您最近一年使用:0次
名校
解题方法
6 . 函数
的定义域为
,对任意
,恒有
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71599cd707909eb30d2a54be7f8c966.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e663df07f3e3e4c32c752189dd66940.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64541d7f445079207b6f671adc7d662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d41a210e61d9a8a6c8426d12ba55ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e817f37f5a814e856ebc4a16d676ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71599cd707909eb30d2a54be7f8c966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e663df07f3e3e4c32c752189dd66940.png)
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名校
解题方法
7 . 随机变量
,
,随机变量
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410f3a274456b579cc10d8a32ee012c.png)
________ ,
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5561436e6294086d5aaee7bccbf33f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f2df2eeceaff9219ee91f2986bf69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410f3a274456b579cc10d8a32ee012c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f412feb8dcad5599ddfe1d1ceb00ac0b.png)
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8 . 圆台内有一个球,该球与圆台的侧面和上下底面均相切,球的球心为
.已知圆台上底面圆的半径为1,下底面圆的半径为
,母线与底面所成的角为
,且
.若该圆台的上下两个底面都在同一个球的球面上,该球的球心为
,记圆台的表面积为
,体积为
,球
的表面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad83973d1361b2928c7e783ffd073b75.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a3587375b61aba9c85c469e40f5148.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd15bcd2eda1d7a943170b39a94a54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da19f0d43a33b280c90491d999ce8227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150a135bbd528daf3f19a58a621a57c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad83973d1361b2928c7e783ffd073b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a3587375b61aba9c85c469e40f5148.png)
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9 . 设集合
为含有
个元素的有限集.若集合
的
个子集
满足以下3个条件:
①
均非空;②
中任意两个集合交集为空集;③
.则称
为集合
的一个
阶分拆.
若
,
为
的2阶分拆,集合
所有元素的平均值为
,集合
所有元素的平均值为
,则
的最小值等于______ ,最大值等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835aeec021f7386dd12faf0b45eced5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835aeec021f7386dd12faf0b45eced5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835aeec021f7386dd12faf0b45eced5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64753bc74df41ce9f28907ff3e087e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835aeec021f7386dd12faf0b45eced5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ed2c8931249ee7b8cb6ed287cbff0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4892ba321f70f83dc5d3a24d904fba9f.png)
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名校
解题方法
10 . 已知正
的边长为
,中心为
,过
的动直线
与边
,
分别相交于点
、
,
,
,
.
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dc34f1eb0f29b09e027a1f69479972.png)
______ ;
(2)
与
的面积之比的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6bd78eaf4e6b4a904b9850392fcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323f0075c96990706da0ba1d81c91ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18bf5477ab809cf5b133a045b0ea8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e07c611d39260a3160ef7380df0fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dc34f1eb0f29b09e027a1f69479972.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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