名校
解题方法
1 . 关于函数
,
,
为自然数集,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63dfbdf13bede155918b6af9622b252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b54fdc920fd0a627959bbc5bd292d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad135b14c9dcd83eab6618d7694c7b0.png)
A.函数只有最大值没有最小值 |
B.函数只有最小值没有最大值 |
C.函数没有最大值也没有最小值 |
D.函数有最小值也有最大值 |
您最近一年使用:0次
2023-11-02更新
|
452次组卷
|
2卷引用:2024届河北省衡水市部分高中高三一模数学试题
2 . 已知数列
的前
项和为
,且
.
(1)求
的通项公式;
(2)数列
满足
,
,设数列
的前
项和为
,证明:
.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be833c9c5dcdeb4a29984ec01b39de5e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2dd0b8b52c9ac88a6c3b63589b103ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97aa50fd82c54f20e34e410e540ddcfa.png)
您最近一年使用:0次
2023-11-02更新
|
1196次组卷
|
4卷引用:河北省邢台市名校联盟2024届高三上学期期中数学试题
解题方法
3 . 已知函数
,若函数
恰有4个零点,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40551b95977c9bad21a18c145fbcf9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812b9268d9adae954a42442021b8f73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
解题方法
4 . 已知公差大于零的等差数列
的前
项和为
,
,且满足
.
(1)证明:
是等差数列;
(2)若数列
满足
,是否存在非零实数
使得
为等差数列?若存在,求出
的值;若不存在,请说明理由.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dd5f7e7c34c0d4e40b0769f6ecdcdd.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e4a9bdb1a7d858f6fddd7b1b5c1793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
5 . 如图,矩形
中,
,
,
、
分别是
、
的中点,以某动直线
为折痕将矩形在其下方的部分翻折,使得每次翻折后点
都落在
上,记为
,过点
作
,与直线
交于点
,设点
的轨迹是曲线
.
(1)以点
为原点,以直线
为
轴建立直角坐标系,求曲线
的方程;
(2)
是
上一点,
,过点
的直线交曲线
于
、
两点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c097f033b5094cfd504c27642f29e1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/b94469fd19f40116e2dec334919d6586.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/89a8843a-7d29-48e5-a320-c54e218cbd25.png?resizew=176)
(1)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169aeb5bb26176d46955205d0af9c889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9473172c46b47b6e8f5ba4dcb36d3230.png)
您最近一年使用:0次
名校
解题方法
6 . 设
,
分别是椭圆
的左,右焦点,过点
的直线交椭圆
于
,
两点,若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ee8e8842d8182a0f76c58d6564f1f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/8da1d0127de8f30919a8440868e6d46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4b7cf1682b9e7b16d7d15e27595ef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ee8e8842d8182a0f76c58d6564f1f.png)
您最近一年使用:0次
名校
7 . 已知
的内角
,
,
的对边分别为
、
、
,
.
(1)求
;
(2)已知
为
边上的中线,
,
,求
的面积.
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4979a78994ef51f222a01953a0fe1f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd17f81ff4c76548945c56e4f211fee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8713794346467be591bdb4c5dee485b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
8 . 某数学建模活动小组在开展主题为“空中不可到达两点的测距问题”的探究活动中,抽象并构建了如图所示的几何模型,该模型中
,
均与水平面
垂直.在已测得可直接到达的两点间距离
,
的情况下,四名同学用测角仪各自测得下列四组角中的一组角的度数,①
,
,
,②
,
,
,③
,
,
,④
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/d891988b-7089-4ab7-a2de-7ca5b1736f55.png?resizew=212)
(1)请同学们指出其中一定能唯一确定
,
之间的距离的组号;(指出所有满足条件的组号)
(2)若已知
,
,
,
,
,
,
,请你结合自己在(1)中的选择,从中选出一组利用所给数据,求
的值.(若多做,按第一种方案给分)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279563c3c055777ce1aa369a2ef54aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135ce1e511ca8c19107d83e6aef598e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0e605e9bee106ad45212f8b90ab178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0e605e9bee106ad45212f8b90ab178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f8eff113ca3f0d0200253c7c2f5a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135ce1e511ca8c19107d83e6aef598e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0e605e9bee106ad45212f8b90ab178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f8eff113ca3f0d0200253c7c2f5a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135ce1e511ca8c19107d83e6aef598e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0e605e9bee106ad45212f8b90ab178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/d891988b-7089-4ab7-a2de-7ca5b1736f55.png?resizew=212)
(1)请同学们指出其中一定能唯一确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)若已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad571cd4a977b086a7c2db1fbb4d4e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efa1db5649ac8259f731461ff1443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14076a4619c1c85dcb4db97ee10cec79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6610676353016a9f7235d306b731c1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269c684310d0f7b5b9bf0a291e7ee748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
名校
解题方法
9 . 若
为等差数列,
是其前
项的和,且
,
为等比数列,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6433023093d300356a60f3b4b9c74274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffde049c199cd8366123178181d1ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd3288b70e25d4c048df89ca2529f41.png)
您最近一年使用:0次
名校
解题方法
10 . 邢台一中数学探索馆中“圆与非圆—搬运”的教具中出现的勒洛三角形是一种典型的定宽曲线,以等边三角形每个顶点为圆心,以边长为半径,在另两个顶点间作一段圆弧,三段圆弧围成的曲边三角形就是勒洛三角形.在如图所示的勒洛三角形中,已知
,
为弧
上的一点,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ecc27eeafbbfa72eb3e03c3cf56bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3f33f56499be09f2f90631ea4b855b.png)
A.0 | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2023-11-02更新
|
450次组卷
|
4卷引用:河北省邢台市信都区邢台市第一中学2024届高三上学期10月月考数学试题
河北省邢台市信都区邢台市第一中学2024届高三上学期10月月考数学试题(已下线)6.4.1平面几何中的向量方法+6.4.2向量在物理中的应用举例【第三练】“上好三节课,做好三套题“高中数学素养晋级之路安徽省亳州市第二完全中学2023-2024学年高一下学期第一次月考(3月)数学试题(已下线)6.2.4 向量的数量积——课后作业(提升版)