解题方法
1 . 已知关于
的方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38abfe94aab2620c3f39e483615dfbf5.png)
有两个实根
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
,则下列不等式中正确的有______ .(填写所有正确结论的序号)
①
; ②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d991bd47bd0825b3a84f5d635ee5f9dc.png)
③
; ④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38abfe94aab2620c3f39e483615dfbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cea72e0c37257bcfd85a59ef8dd0f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ce41c1548ce8cfb04284ad9768878a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6175a72db472feeed10e44fd8df3fc70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d991bd47bd0825b3a84f5d635ee5f9dc.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6566566211b4627a3e2447c3d126ce7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00ea29ab2851b2b9585cb0a3225e560.png)
您最近一年使用:0次
2021-09-11更新
|
464次组卷
|
4卷引用:河南省大联考2021-2022学年高三上学期阶段性测试(一)文科数学试题
河南省大联考2021-2022学年高三上学期阶段性测试(一)文科数学试题河南省十所名校2021-2022学年高三上学期文科数学阶段性测试(一)(已下线)专题17 不等式-备战2022年高考数学学霸纠错(全国通用)(已下线)考向22不等式性质与基本不等式(重点) - 2
名校
2 . 将初始温度为
的物体放在室温恒定为
的实验室里,现等时间间隔测量物体温度,将第
次测量得到的物体温度记为
,已知
.已知物体温度的变化与实验室和物体温度差成正比(比例系数为
).给出以下几个模型,那么能够描述这些测量数据的一个合理模型为__________ :(填写模型对应的序号)
①
;②
;③
.
在上述模型下,设物体温度从
升到
所需时间为
,从
上升到
所需时间为
,从
上升到
所需时间为
,那么
与
的大小关系是________ (用“
”,“
”或“
”号填空)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753eef04e0f8fa2f986cde182c6e0a11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7fda751813a197463eafc50c8be5c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9297e289a9ef977009186083ec738ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea374681dd13a3faca4a6aa9cc07cc8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a3019bfc89157cd5d3fc3d5f242e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd2aa02e4912ad41b439b150325da54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b47d87eddd17df99c4de2bd043c00a.png)
在上述模型下,设物体温度从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573a6abe18ca58ca6f5804b8770df848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e554c28242b6cbd70c3f6974f5294e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155c51cbd30e9611dd58f882e4b75c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e554c28242b6cbd70c3f6974f5294e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699848e29465963154204980727c0909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1ebc92a0010b4914d5ea0d7878394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699848e29465963154204980727c0909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8686975dd5327f7db255156a3eaa52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83763564cdefe596fc31d487d10033e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ecc3aaae2aa289591a3b632f1e0645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
您最近一年使用:0次
2020-01-10更新
|
454次组卷
|
5卷引用:北京市东城区2019-2020学年高三上学期期末数学试题
北京市东城区2019-2020学年高三上学期期末数学试题(已下线)专题7.1 不等式的解法-备战2021年高考数学精选考点专项突破题集(新高考地区)重庆市第二外国语学校2021届高三上学期第四次质量检测数学试题北京市中关村中学2020届高三数学统练试题(已下线)第八章 函数应用(单元重点综合测试)-速记·巧练(苏教版2019必修第一册)
名校
解题方法
3 . 已知数列
为等比数列,其前
项和为
,且公比
;数列
为等差数列,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c3d80ac6c1a579eececfca16f0a55.png)
__________
.(填写“
”,“
”或“
”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.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/d2b429d189e2b9fe22e55e82d0f831a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761f70e0d9cc81e15654790a10b1767a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c3d80ac6c1a579eececfca16f0a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d98be54935b736c6c917feb9c5913e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
您最近一年使用:0次
2017-11-07更新
|
835次组卷
|
2卷引用:江苏省南京市2024届高三上学期零模考前押题数学试题