名校
1 . 设某直角三角形的三个内角的余弦值成等差数列,则最小内角的正切值为__________ .
您最近一年使用:0次
2 . 已知等差数列
的通项公式为
,则公差![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a4658ab94306d39aedda17deed7216.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c0e966db2d11c9dba1454ac6fcb8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a4658ab94306d39aedda17deed7216.png)
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解题方法
3 . 已知等差数列
,
,
,…, 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/730da95cbce9628ab85d9bc270f4f033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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4 . 设等差数列
的前
项和为
,若
,
是方程
的两根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554e6c461ccc5aa3093c524aa528a4e2.png)
___________ .
![](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/5da4cd81500bdb43118150dbdb1541e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b45eb7ec8f4496b99be1097163c222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554e6c461ccc5aa3093c524aa528a4e2.png)
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5 . 判断下列命题,把正确的命题序号写在横线上:__________ .
(1)实数2,8的等比中项为4;
(2)若
为等差数列且前n项和为
,则
是等差数列;
(3)已知数列
前n项和
,则
为等比数列;
(4)已知
为等比数列,则数列
是等比数列(其中
);
(5)若数列
满足
,则数列
为等差数列.
(1)实数2,8的等比中项为4;
(2)若
![](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/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e1f70fb9ac4b3c7f04e18c673eca5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181778bd8a2503690e92bd09a61af75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f306d2b261f4c39a9fc0858d96e647.png)
(5)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7266459b6116ed35d57cc8fa54df8282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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解题方法
6 . 在等差数列
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c47fc8df6f62a1c1fc2bde7e49ef042.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3783e69ef5a6a0af566ff4e21ccf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25fc6e4698a74a39097e891812c976ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a1c59a23cf95dccc65daf198f0b874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c47fc8df6f62a1c1fc2bde7e49ef042.png)
您最近一年使用:0次
名校
7 . 已知
,
,数列
是公差为1的等差数列,若
的值最小,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e511b7c4777c33b605ce5e53f820a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8eec1206d60c437499c7f6b87a989a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
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2023-12-12更新
|
810次组卷
|
10卷引用:上海市闵行区2024届高三上学期学业质量调研(一模)数学试卷
上海市闵行区2024届高三上学期学业质量调研(一模)数学试卷吉林省通化市梅河口市第五中学2024届高三上学期12月月考数学试题江西省上饶市广丰一中2024届高三上学期12月月考数学试题(已下线)模块一 专题6 数列的通项公式与求和问题上海市青浦区朱家角中学2023-2024学年高二上学期期末考试数学试题江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(四)(已下线)专题05 数列(四大类型题)15区新题速递(已下线)模块一专题3 数列的实际应用和综合问题【讲】高二下人教B版(已下线)模块一 专题4 数列的实际应用和综合问题【讲】高二下北师大版(已下线)上海市高二下学期期末真题必刷02(基础题)--高二期末考点大串讲(沪教版2020选修)
8 . 已知等差数列
的前
项和分别为
和
,若
,且
是整数,则
的值为______ .
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e01d212a3992caffe4f26c9efb731fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244ceb7aa6b4c9ccf22928634a84bf4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2023-12-11更新
|
1051次组卷
|
6卷引用:上海市闵行区七宝中学2024届高三上学期期末数学试题
上海市闵行区七宝中学2024届高三上学期期末数学试题江苏省扬中市第二高级中学2021-2022学年高二上学期期末检测数学试题(二)(已下线)模块三 专题3 小题满分挑战练(2) 期末终极研习室(高二人教A版)四川省遂宁市射洪中学校2023-2024学年高二上学期12月月考数学试题(已下线)高二数学上学期期末模拟试卷-【题型分类归纳】2023-2024学年高二数学同步讲与练(苏教版2019选择性必修第一册)(已下线)专题04数列--高二期末考点大串讲(沪教版2020选修)
9 . 已知
,
,
是
和
的等差中项,则
的值等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da44d84ecfba033e46b6e854a1e7eca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
10 . 在共有2023项的等比数列
中,有等式
成立,类比上述性质,在共有2023项的等差数列
中,相应的有等式______ 成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80eae440bc359521b680637e9401b797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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