名校
解题方法
1 . 在
中,角
的对边分别为
,
,
,且
,则
的形状为_________ 三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.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/323b8b64ccdb829eaefa2180796012eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
解题方法
2 . 在
中,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd1fcfad659e95da18c38e5eb157b8.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0334bc85843337c4dfcfdc5c638f9f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd1fcfad659e95da18c38e5eb157b8.png)
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名校
解题方法
3 . 在
中,内角A,B,C所对的边分别为a,b,c,已知
,若
为
的面积,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eb8d72aa02ebcffa150d1689cbedf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1a0f8877e8eba9d3681d1a81679587.png)
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2024-04-29更新
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3卷引用:吉林省四平市第一高级中学2023-2024学年高二上学期期初验收考试数学试题
名校
解题方法
4 . 数列
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
________ .
![](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/0e94b7e0d9e764f536997cc0e8e4654e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
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2024-04-04更新
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2卷引用:河南省南阳市西峡县第二高级中学2023-2024学年高二下学期开学考试数学试题
名校
5 . 设等比数列
中,每项均是正数,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75553b399da0bc6c4280ce1ace5236f.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f259d64b9957eef2f64a269244e3f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75553b399da0bc6c4280ce1ace5236f.png)
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2024-04-03更新
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2卷引用:湖南省岳阳市岳阳县第一中学2023-2024学年高二下学期开学数学试题
名校
解题方法
6 . 在等比数列
中,
,
为该数列的前
项和,
为数列
的前
项和,且
,则实数
的值是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76eedb8b626a77f8c26d2995bb37067c.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e67df7ba7033fe92780c2a5c1c7852d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2卷引用:江苏省南京市五校2023-2024学年高二下学期期初调研测试数学试题
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7 . 设等比数列
的公比为
为前
项和,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12987b03c38b4ada5aed3f5e12b23852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88eabdbd7d8bdc68bdf782b360cbb889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
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8 . 习近平总书记在党的二十大报告中提出:坚持以人民为中心发展教育,加快建设高质量教育体系,发展素质教育,促进教育公平,加快义务教育优质均衡发展和城乡一体化.某师范大学学生会为贯彻党的二十大精神,成立“送教下乡志愿者服务社”,分期分批派遣大四学生赴乡村支教.原计划第一批派遣20名学生,以后每批都比上一批增加5人.由于志愿者人数暴涨,服务社临时决定改变派遣计划,具体规则为:把原计划拟派遣的各批人数依次构成的数列记为
,在数列
的任意相邻两项
与
之间插入
个3,使它们和原数列的项构成一个新的数列
.按新数列
的各项依次派遣支教学生.记
为派遣70批学生后支教学生的总数,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610d11a711d2ec18d34f90c959c42d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98aa5f1acb67ec4580d240c2525e4d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73447aa1aa60f4cc6decb2ee51d71f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc915a27c16580bde454f839f48371b.png)
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2024-03-22更新
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2卷引用:安徽省淮北市第一中学2023-2024学年高二下学期开学考试数学试题
9 . 设数列
满足
,
,若
且数列
的前
项和为
,则
______ .
![](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/6672b832da87660e7919ea3f7d50bf0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bac4b6e74bc72823d31a2fd52856d14.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6860decbe10321e6e90e0480ed35dc8.png)
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2024-03-21更新
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1231次组卷
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6卷引用:安徽省舒城中学2023-2024学年高二下学期开学考试数学试卷
安徽省舒城中学2023-2024学年高二下学期开学考试数学试卷吉林省长春市绿园区长春市文理高中2023-2024学年高二下学期4月月考数学试题湖南省衡阳市衡阳县第一中学2023-2024学年高二下学期4月期中考试数学试题(已下线)专题3 复杂递推及斐波那契数列相关二阶递推问题【练】(高二期末压轴专项)湖北省十一校2024届高三联考考后提升数学模拟训练一(已下线)第5套 新高考全真模拟卷(二模重组)
10 . 已知向量在向量
上的投影向量的模为
,则
为整数的n的值按照从小到大的顺序排列,得到的新数列的前n项和
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2卷引用:广西百所名校2023-2024学年高二下学期入学联合检测数学试题