1 . 已知等差数列
的首项为1,前
项和为
,且
是3与
的等比中项.
(1)求数列
的通项公式:
(2)若
是数列
的前
项和,求
的最小值.
![](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/eb0f10a8a67a3b6c595745f9a82b45b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29ed246168b03ba97deedbd0c26d373.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2卷引用:上海市宝山区2023-2024学年高二下学期期末教学质量监测数学试卷
2 . 中中国古代数学著作《算法统宗》中有这样一个问题:“三百七十八里关,初行健步不为难,次日脚痛减一半,六朝才得到其关,要见次日行里数,请公仔细算相还.其意思是:有一个人要走378里路,第一天健步行走,从第二天起因为脚痛,每天走的路程为前一天的一半,走了6天后到达目的地,请问第二天走了__________ 里.
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55次组卷
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2卷引用:上海市宝山区2023-2024学年高二下学期期末教学质量监测数学试卷
名校
解题方法
3 . 设双曲线
的左、右焦点为
、
,点
是
上一点,满足
,则
的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1983309686915252c4efc8e4455b9d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d124b231bf2cd3746f35e6c68cd7178f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
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真题
4 . 无穷等比数列
满足首项
,记
,若对任意正整数
集合
是闭区间,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b67857a043caf87b55d38401d0d9062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d59e4e49e9b0b2493f18b41e260da5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72f2cbabcb955a433e99bf0ee8ec020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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真题
5 . 已知
则不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbce12f6911dacf78262ba950c0be55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e1bcced697608aa2a6c6afcc181da7.png)
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名校
解题方法
6 . 在
中,角A、B、C的对边分别为a、b、c,若
且
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a909bc3d298d36d21b18644fdff89a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7098e7fdd9d6f543265b359a1f038d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等边三角形 | B.顶角为![]() |
C.等腰直角三角形 | D.非直角三角形,也非等腰三角形 |
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7 . 在数列
中,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acca5aa6b2285d897a65c289c1b54ba.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/cc48cbf37aa82359f1aedb258af9d34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acca5aa6b2285d897a65c289c1b54ba.png)
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8 . 已知曲线
,过点
作该曲线的5条弦,这些弦的长度构成一个递增的等差数列,则该数列公差的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df58ee3360883170516d2a75629c8162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a6b0736b4972224e50d2cef4654b07.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 在等差数列
中,
,则
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f25ed5b2248d4d06cc6e8386878252a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1f5a8f26fc6dad4e1f67467b16f97b.png)
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名校
解题方法
10 . 已知
三边上的高分别为
、
、
,且
,则此三角形最大角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41adb69069b5073e1dbf82be6db4b82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d0159603c0eb63f21c2d30511e1d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f78f88a39e465b1223c2c352674ecfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058793b6f23156815146438958de2459.png)
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