名校
解题方法
1 . 已知数列
的前
项和为
,且
.
(1)求数列
的通项公式;
(2)若
,
,求证:
.
![](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/a742ea39d5f4c69ecb789537648bcb4b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40185377bf23c0aef1f590d2a77cf452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175005738672c8c1f431aac6333ab94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d5ef0159d6722c2770e2d4258a774e.png)
您最近一年使用:0次
2024-03-12更新
|
2789次组卷
|
4卷引用:山东省菏泽市2024届高三下学期一模考试数学试题
山东省菏泽市2024届高三下学期一模考试数学试题(已下线)宁夏回族自治区石嘴山市平罗中学2024届高三下学期第一次模拟考试数学(理)试题广西壮族自治区2023-2024学年高二下学期3月联考数学试卷浙江省海宁市第一中学2023-2024学年高二下学期3月阶段测试数学试题
名校
2 . (1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7305a5f1ee22a4b71cbc611eab3e965f.png)
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7305a5f1ee22a4b71cbc611eab3e965f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5c9c7d0ce30d5f98412b4ef8ff984b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62fbdfd910a0ec9d9688fb15809d5fc.png)
您最近一年使用:0次
名校
3 . (1)求
的值;
(2)已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae41b71f234d337a57e52d67ee7ca15b.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d7acaa3fe60e42621516fce4d12768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0081afec9de3b4f848e17d916624e69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5159e28268cfdbfda614b0b1c5e0ca.png)
您最近一年使用:0次
2024-02-11更新
|
186次组卷
|
3卷引用:山东省青岛第九中学2023-2024学年高一下学期期初检测数学试卷
4 . (1)计算
;
(2)计算
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b063a37fa6c041cda02542ff178a544a.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869cf4a7c2710762cab123667f45f66c.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)若
,求方程
的解集;
(2)若函数
的最小值为
,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10dda958e0a26731d73c3127f9ad484.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f9a575fc639253a8efe28ab73a985e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a711a0b8c90ec23b7d449c0709746cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e35f76e01c3979ae5987f7729f9856.png)
您最近一年使用:0次
解题方法
6 . 求解下列问题:
(1)已知
,
,求
的值.
(2)求
的值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d7acaa3fe60e42621516fce4d12768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413e508a980a278ad1480fea1111a718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebe06d0c9ffa4bdd7ed79dfbe1b19fe.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae41b71f234d337a57e52d67ee7ca15b.png)
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7 . 经验表明,某种日照绿茶用80℃的水泡制,再等到茶水温度降至60℃时,饮用口感最佳.为方便控制水温,某研究小组采用了物体在常温环境下温度变化的冷却模型;若物体的初始温度是
℃,室温是
℃,则经过时间
(单位;分钟)后物体的温度
(单位:℃)满足
,其中
为正常数.研究小组通过多次测量取平均值的方法,测得200mL初始温度为85℃的茶水,放在室温25℃的环境中自然冷却,10分钟以后茶水的温度降至55℃.
(1)求
的值;
(2)当室温为20℃时,若该种日照绿茶用80℃的水泡制,自然冷却至60℃,可以产生最佳口感,那么,则刚泡好的茶水大约需要放置多长时间才能达到最佳饮用口感?(结果精确到0.1)(附,参考值
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4438bae1705c0f26beddf41322c087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6861ea66b004cf4b9058032e2d3df15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)当室温为20℃时,若该种日照绿茶用80℃的水泡制,自然冷却至60℃,可以产生最佳口感,那么,则刚泡好的茶水大约需要放置多长时间才能达到最佳饮用口感?(结果精确到0.1)(附,参考值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400f57f3bc59cf9032aeba473b8553b1.png)
您最近一年使用:0次
8 . 已知数列
,满足
且点
在函数
的图像上,且
.
(1)证明:
是等比数列.并求
.
(2)令
,设
的前
项和
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a189f5f230b75af75eed2a5ff0f24b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69b76612264b62b3e66947e71707ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88aef647186022d30b0e719126d6465.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d8f2f15adae9848373de1ab8c7bc7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e9c7610cbf2bda17bd7206969fb599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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/105de1b20942840a12712c6795a05e1b.png)
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解题方法
9 . 设数列
的前n项和为
,已知
,
.
(1)证明:数列
是等比数列;
(2)设
,求数列
的前n项和为
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180c2be01a9ba9e4c7219029af86293b.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661fb8eb9ebf28433198329f10dbafc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2023-04-15更新
|
443次组卷
|
2卷引用:山东省德州市乐陵市乐陵民生教育高级中学2022-2023学年高二下学期5月月考数学试题
名校
解题方法
10 . 已知函数
,函数
.
(1)求函数
的最小值;
(2)若存在实数
,使不等式
成立,求实数x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2883ebb20f98df9d9896f6f2fa036efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b1cbf0eed59acd86e01134f7f662f4.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71366a875338a5acfcc9f19aa675d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9407ee0de028ea9d643279c15e52da7.png)
您最近一年使用:0次
2023-02-10更新
|
886次组卷
|
3卷引用:山东省潍坊市2022-2023学年高一上学期期末考试数学试题