名校
解题方法
1 . 已知函数
,
,若
,
,使得
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352c45e38ba008711402da4f4410bebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69f18b2078d75f882b3b59f41f5c56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e91fe37b4c33da62c1e2eaa2f860849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fe3251e054fe97089806ba7033f802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bd584305648283baacc9d04d013eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceddc345bfa05b7c0c61ec02470188a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-02更新
|
466次组卷
|
5卷引用:山东省烟台市2023-2024学年高三上学期1月期末学业水平诊断数学试题
2 . 若动圆
与圆
外切,又与直线
相切,则动圆圆心的轨迹方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33acf85498b8ab16ea91f9b7beb06b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fa7155f6858a570e8dee2495822a3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
3 . 数列
满足
,
,其前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
____ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c88abd936125401c8d7e3bc21f4396.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f943fbe6d64b8a4c630067e730994a.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/0ebce85ea9bc18815ef8887057030a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c88abd936125401c8d7e3bc21f4396.png)
您最近一年使用:0次
解题方法
4 . 已知等差数列
的前n项和为
,
,
,
(1)求
的前n项和
;
(2)若
对任意的正整数n成立,求实数
的取值范围.
![](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/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd478b1ba0e42545b45d505e2e84a140.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e17fe4620b2aefd082cd6434d7e416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
5 . 已知等差数列
的前
项和为
,
,
、
、
成等比数列,数列
的前
项和为
,且
.
(1)求数列
、
的通项公式;
(2)设
,求数列
的前n项和
.
![](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/8dc759e6f45cff8dacef4206490e98a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8700f8343885ed5ffa9ace07cc5ed0d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007ec259b3bbda9bb4dd29b77fceac0c.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/48d1f75e430328c7d7e396480c917880.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6441abe873c5370b8efbd4714c21e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15526f7c892333030073b85fc3baee6.png)
您最近一年使用:0次
2024-02-21更新
|
460次组卷
|
3卷引用:山东省烟台爱华高级中学2023-2024学年高二上学期期末模拟数学试题(一)B卷
6 . 已知
为曲线
上任意一点,直线
与圆
相切,且分别与
交于
两点,
为坐标原点.
(1)若
为定值,求
的值,并说明理由;
(2)若
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73e5d0249b0d0aaea8c8b83fa184d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec8858389f4c3156a946ba8bf0d8a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c97bd891b4a3050956bbaf52b4cfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4aacf265e413ee2c2df0f4e2af2058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
您最近一年使用:0次
2024-02-20更新
|
657次组卷
|
2卷引用:山东省烟台市2023-2024学年高三上学期1月期末学业水平诊断数学试题
7 . 如图,四棱锥
中,底面
是边长为2的菱形,
,平面
底面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/dc5ba22d-a365-4743-b2d9-94a4a0eef166.png?resizew=170)
(1)求证:
;
(2)若
,且四棱锥
的体积为2,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcf34539673d516eb9b259951a81ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105542c7be8212337a677a92851dc8b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/dc5ba22d-a365-4743-b2d9-94a4a0eef166.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8f9303c09efc2c1b0cb798f9dfc6f7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3f74153816d0a7733bc9c91282e75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcf34539673d516eb9b259951a81ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a392d05d3cfcbb438569b1ea9980dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f526e2fe627bb4ddebe708c07d0a22fc.png)
您最近一年使用:0次
8 . 某学校计划举办趣味投篮比赛,比赛分若干局进行.每一局比赛规则如下:两人组成一个小组,每人各投篮3次;若某选手投中次数多于未投中次数,则称该选手为“好投手”;若两人均为“好投手”,则称该小组为本局比赛的“神投手组合”.假定每位参赛选手均参加每一局的比赛,每人每次投篮结果互不影响.若甲、乙两位同学组成一个小组参赛,且甲、乙同学的投篮命中率分别为
.
(1)求在一局比赛中甲被称为“好投手”的概率;
(2)若以“甲、乙同学组成的小组获得“神投手组合”的局数为3的概率最大”作为决策依据,试推断本次投篮比赛设置的总局数
为多少时,对该小组更有利?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960f4322777c4822ada726aee4c7236f.png)
(1)求在一局比赛中甲被称为“好投手”的概率;
(2)若以“甲、乙同学组成的小组获得“神投手组合”的局数为3的概率最大”作为决策依据,试推断本次投篮比赛设置的总局数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49dac16bbcffa236fbee961ada16420.png)
您最近一年使用:0次
9 .
的展开式中
的系数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded7937cdc14b5a3dfce9f9598628b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
您最近一年使用:0次
10 . 已知等差数列
的前
项和为
且
,则
的值为__________ .
![](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/6de6adfb5c0c472a405cc135f036be6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b24e22503480d88ec847c9bc1be5d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次