1 . 在数列
中,
,且
.
(1)若
,证明:数列
是等比数列;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352d9b76dcf639368fa68cae70149802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79b237a8e03a2ef92878e7beb86bfd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5225dc349cd2a56194827de3f4174b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
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名校
2 . 在数列
中,
,
,则
的前2024项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71d4a9c13754e4083ba948afd4a35ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.589 | B.590 | C.![]() | D.![]() |
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解题方法
3 . 已知等差数列
的前
项和为
.
(1)求
的通项公式;
(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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156ff12ebc86677c4215a8f0563ef4ed.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2024-06-15更新
|
757次组卷
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3卷引用:河北省深州中学2023-2024学年高二上学期期末考试数学试题
名校
解题方法
4 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfc436eb1738984ed3b50eca6569a02.png)
A.函数![]() |
B.![]() |
C.当![]() ![]() |
D.若函数![]() ![]() ![]() |
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2024-06-04更新
|
420次组卷
|
2卷引用:河北省深州中学2023-2024学年高二上学期期末考试数学试题
名校
解题方法
5 . 过点
的直线与抛物线
交于
两点,
为抛物线的焦点,
,若
,则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba9cbf3da8a10c81962ec36abf75e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460c7e2be5dfe0019ef95f7d196b7d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
6 . 由正整数组成的数对按规律排列如下:
,
.若数对
满足
,则数对
排在第_______ 位.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a2f06fb0027c961b32cbb1fcf21958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f840afbf1a30a0a775964f4af077ef40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633c9c159d7c1bd064e82a0574983da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
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解题方法
7 . 将顶点在原点,始边为
轴非负半轴的锐角
的终边绕原点逆时针转过
后,交单位圆于点
,那么
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2380418bca9ec15393a8dfcaa51b0d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6978b95c4fc8e07c073594268d16ecb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a282d19bf2c827a98d4443330f7ca1.png)
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解题方法
8 . 已知正项数列
的前项积为
,且满足
.
(1)求证:数列
为等比数列,并求
;
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ea55195eba6040a83fc43a23d95eb2.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e7f1421d306e84f98d00b7c8652647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb3766d5160d460a00a15c0bd4d94b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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9 . 若斜率为1的直线
与曲线
和圆
都相切,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/190b9ce555e91dc891a3e80fc776fd1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28123e129b6426c9a5f31ad8ec2465b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.0或2 | B.0或![]() | C.2 | D.![]() |
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2024-02-23更新
|
974次组卷
|
4卷引用:河北省武邑中学2023-2024学年高三上学期1月期末考试数学试题
河北省武邑中学2023-2024学年高三上学期1月期末考试数学试题(已下线)专题05导数的概念、导数计算及切线方程的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)四川省成都市成都七中万达学校2023-2024学年高二下学期3月月考数学试题广东省深圳市科学高中2023-2024学年高二下学期4月月考数学试题
解题方法
10 . 如图,正三棱柱
的各条棱长都为2,M,N分别是AB,
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/a6bbcc06-147d-4830-91c9-10d3ee0d9c3f.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/a6bbcc06-147d-4830-91c9-10d3ee0d9c3f.png?resizew=129)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
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2024-02-14更新
|
194次组卷
|
2卷引用:河北省衡水市枣强县名校协作2024届高三上学期期末数学试题