解题方法
1 . 已知
分别是数列
的前
项和,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478421b81927e435cbcf5acafa89efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758e98bb08ee2d4105904e20c610b421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1376a07ade2c60c5c3bf12886d9487f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-04-03更新
|
328次组卷
|
3卷引用:福建省泉州市2023-2024学年高二上学期1月期末教学质量监测数学试题
福建省泉州市2023-2024学年高二上学期1月期末教学质量监测数学试题(已下线)专题01求数列通项公式9种常考题型归类【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)浙江省杭州市富阳区场口中学2023-2024学年高二下学期3月教学质量检测数学试题
2 . 已知数列
为递增的等差数列,
为
和
的等比中项.
(1)求数列
通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de97c8b7edcdcadf6f00a8e026ce4774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5026cdcb467987cdef9da732a17582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea2059d41da264b08aa7692f82fc1fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
3 . 已知
为双曲线
的两个焦点,
为双曲线上的任意一点,若
的最小值为
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34005d3b709a89e3db6bb786bbfb2369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b61531bb6dcdf3ed678538faa3991ea.png)
A.![]() | B.![]() | C.2 | D.3 |
您最近一年使用:0次
2024-03-07更新
|
255次组卷
|
2卷引用:福建省泉州市2023-2024学年高二上学期1月期末教学质量监测数学试题
4 . 三棱台
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/f38c4d30-e985-4518-b44a-3913408773b0.png?resizew=274)
(1)若
与
交于点
,求证:
平面
;
(2)若平面
平面
与底面
所成角的正切值为
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5545dc3211671941048034af38092fa6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/f38c4d30-e985-4518-b44a-3913408773b0.png?resizew=274)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e341123522cf56a25b70cc794abc8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5352d28609d1b3d09a0a29d023d1bb72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d53d01df4d50daeee72c77a739660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
您最近一年使用:0次
5 . 直线
恒过定点______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1cdb87a137d553aebb47d86722b863e.png)
您最近一年使用:0次
解题方法
6 . 已知椭圆
与
轴交于
两点,点
为椭圆上不同于
的点.
(1)若直线
的斜率分别为
,求
的最小值;
(2)已知直线
,直线
分别交
于P、Q两点,
为PQ中点.试判断直线MN与
的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03df57efff473b3cfeb8503796b7d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3fbcd952073f38340769b8fbca5b23.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4442b040afdc6dadb0435ee89258a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03df57efff473b3cfeb8503796b7d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
7 . 已知曲线
(
为非零常数),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5adf543a16a8ad1a060e6a22a3eabfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.原点是![]() |
B.直线![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
解题方法
8 . 已知动圆
过点
且与直线
相切,记该动圆圆心
的轨迹为曲线
.
(1)求
的方程;
(2)若过点
的直线
交
于
两点,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1cfd56cd81719d6adcf2dc655c86b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ff505aebde9fd4ca73e22b930aeed9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次
解题方法
9 . 已知
是抛物线
上纵坐标为4的点,则
与
的焦点的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b05335b4876c7a2e53172fe811c51579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
解题方法
10 . 第二十四届北京冬季奥林匹克运动会开幕式上的主火炬如图一,这是历史上第一座由所有参赛国家和地区的名字汇聚成的大雪花.没有天马行空的点火方式,也没有赫赫炎炎的剧烈燃烧,但却清晰地传递了低碳环保理念,一朵雪花照亮了“双奥之城”北京,也将照亮全人类的绿色未来.如图二是瑞典数学家科赫在1904年构造的能够描述雪花形状的图案,其作法是从一个正三角形开始,把每条边三等分,然后以各边的中间一段为底边分别向外作正三角形,再去掉底边,,反复进行这一过程,就得到一个“雪花”状的图案.已知原正三角形(图二①)的边长为3,并将图二中的第
个图的面积记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/c0ba5540-65be-4dcb-8fd4-a0c56044acaa.png?resizew=207)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/08a6f036-c5cd-43f2-950c-9932f35d3ae1.png?resizew=436)
(1)求
;
(2)求数列
的通项公式,并探究是否存在超过图二①面积2倍的图形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/c0ba5540-65be-4dcb-8fd4-a0c56044acaa.png?resizew=207)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/08a6f036-c5cd-43f2-950c-9932f35d3ae1.png?resizew=436)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
您最近一年使用:0次