名校
解题方法
1 . 已知数列
的前
项和为
.若对每一个
,有且仅有一个
,使得
,则称
为“
数列”.记
,
,称数列
为
的“余项数列”.
(1)若
的前四项依次为0,1,-1,1,试判断
是否为“
数列”,并说明理由;
(2)若
,证明
为“
数列”,并求它的“余项数列”的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5c62f6f57cb86e3b2e3719d9f6caa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b076b91ddd43ed88bb2127f504005a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1076fbf6b366cb2d5dde6590d3f860c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb32f6df7d866ea22308defee71a45c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5c62f6f57cb86e3b2e3719d9f6caa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b31b0145c37e9be6e4855a0408a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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2 . 如图,已知双曲线
的离心率为2,点
在C上,A,B为双曲线的左、右顶点,
为右支上的动点,直线AP和直线x=1交于点N,直线NB交C的右支于点Q.
(2)探究直线PQ是否过定点,若过定点,求出该定点坐标,请说明理由;
(3)设S1,S2分别为△ABN和△NPQ的外接圆面积,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765cbff0d67de6de7129c4b693f7652b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)探究直线PQ是否过定点,若过定点,求出该定点坐标,请说明理由;
(3)设S1,S2分别为△ABN和△NPQ的外接圆面积,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142b9d242ef0c6b807d1257f2638b37b.png)
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解题方法
3 . 已知正
的边长为1,中心为
,过
的动直线
与边
分别相交于点
.
,求
.
(2)求
与
的面积之比的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252073fc8a87858d4b6d4b08a5633d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e07c611d39260a3160ef7380df0fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679b22a0418a8d024288016731e21e81.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
4 . 已知向量
反向,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee608d639b3bc3ea3aef334e9459c6b.png)
(1)求向量
的坐标.
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee608d639b3bc3ea3aef334e9459c6b.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c155ddacf0331e9e57c24c7cc1fc3e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c5f3d88dc54b71494605f41bf19382.png)
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解题方法
5 . 如图,已知AA1⊥平面ABC,BB1∥AA1,AB=AC=3,BC=2
,AA1=
,BB1=2
,点E和F分别为BC和A1C的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/23/558718a4-fa11-4963-99fb-916c3b8b18de.png?resizew=122)
(1)求证:EF∥平面A1B1BA;
(2)求证:直线AE⊥平面BCB1;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/23/558718a4-fa11-4963-99fb-916c3b8b18de.png?resizew=122)
(1)求证:EF∥平面A1B1BA;
(2)求证:直线AE⊥平面BCB1;
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名校
解题方法
6 . 2023年10月22日,汉江生态城2023襄阳马拉松在湖北省襄阳市成功举行,志愿者的服务工作是马拉松成功举办的重要保障,襄阳市新时代文明实践中心承办了志愿者选拔的面试工作.现随机抽取了100名候选者的面试成绩,并分成五组:
,第二组
,第三组
,第四组
,第五组
,绘制成如图所示的频率分布直方图.已知第一、二组的频率之和为0.3,第一组和第五组的频率相同.
(2)现从以上各组中用分层随机抽样的方法选取20人,担任本市的宣传者.若本市宣传者中第二组面试者的面试成绩的平均数和方差分别为62和40,第四组面试者的面试成绩的平均数和方差分别为80和70,据此估计这次第二组和第四组所有面试者的面试成绩的方差.
(注:若总体分为2层,通过分层随机抽样,各层抽取的样本量、样本平均数和样本方差分别为:
,
,
;
,
,
记总样本的平均数为
,样本方差为
.则样本方差
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46cad116e629ef7912a71b7f31c9c74b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca161d31588bcb6508e38ebe701bfa38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557f292772f12decc9906937afa894b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/742ea904ed8035b74bedd5097c709ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f77d01bdd4235c7d390eb81f5e0da6e.png)
(2)现从以上各组中用分层随机抽样的方法选取20人,担任本市的宣传者.若本市宣传者中第二组面试者的面试成绩的平均数和方差分别为62和40,第四组面试者的面试成绩的平均数和方差分别为80和70,据此估计这次第二组和第四组所有面试者的面试成绩的方差.
(注:若总体分为2层,通过分层随机抽样,各层抽取的样本量、样本平均数和样本方差分别为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c44826e58f11a58d3a6c233fc5df2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c85481cd7e94130ef3aa05b4a39e79cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbc29b47b83fdc5368770b7b1acb439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215b1424b299b737554386b090af8316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923d80da4a6cb5f102be334006d875a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1295cbd36fdc55a55b549aa2dd5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82359e2d8f541e44c6be90a390f33ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671f43c79d612c93a6d160335e86e177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41766caf098218c05f2255bc54fdcef6.png)
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名校
7 . 已知
,
,
是自然对数的底数.
(1)当
时,求函数
的极值;
(2)若关于
的方程
有两个不等实根,求
的取值范围;
(3)当
时,若满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20a21999ea818acdfb48d3641f70d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0369099d128586f54e7d566a5cdc5686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdc729607cf42c430488ff4bd2cd4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecfe7cc8dc611725c443293a3c2f377.png)
您最近一年使用:0次
昨日更新
|
397次组卷
|
3卷引用:上海市格致中学2024届高三下学期三模数学试卷
名校
解题方法
8 . 某种儿童适用型防蚊液储存在一个容器中,该容器由两个半球和一个圆柱组成(其中上半球是容器的盖子,防蚊液储存在下半球及圆柱中),容器轴截面如题图所示,两头是半圆形,中间区域是矩形
,其外周长为100毫米.防蚊液所占的体积为圆柱体体积和一个半球体积之和.假设
的长为
毫米.
关于
的函数关系式;
(2)如何设计
与
的长度,使得
最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1d2e5599453f8d4c04369bc8f79962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)如何设计
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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解题方法
9 . 如图,在三棱锥
中,平面
平面
,
是等边三角形,
,且
,
、
分别是
、
的中点.
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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名校
10 . 已知函数
对任意x满足:
,二次函数
满足:
且
.
(1)求
,
的解析式;
(2)若
,解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d094f24ee78ea304418a31dad4ae62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fc07003acd1957e27825ac150b402b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6808909ac63a6b2f9d32c08cb793724.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7007d13d5273c7ad1e5aad48ba7e3339.png)
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