1 . 已知函数
(
),则函数
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ac9a839b199426d5d7bf13386fd36e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f274f1247962a5b263183922fedfa086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2 . 已知数列
满足
,
.
(1)若
是递增数列,求实数
的取值范围;
(2)若
,且对任意大于
的正整数
,恒有
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d0b399e3826e2721d683a357fe5dd4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e144b442dc601367909266594699b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaacfaef44a654c0a1c283ef03fc0550.png)
您最近一年使用:0次
3 . 设
,若对于满足
的三个不同实数
,恒有
,则实数a的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09180cd02034cf3cae7827c7f3df828f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e45e961dd36b8f85703c91f248da3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2243513b880087c89c0aa4f662a4af26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e5caadab8cef307757a98251af3bd7.png)
您最近一年使用:0次
4 . 已知数列
的通项为
,其中t为正常数,记
为数列
的前n项和,则下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d7942de8b63b7787ebb8898d96e8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.∃常数m使得对于![]() ![]() ![]() |
B.![]() ![]() |
C.对于![]() ![]() ![]() |
D.对于![]() ![]() ![]() |
您最近一年使用:0次
2021-01-11更新
|
1237次组卷
|
5卷引用:浙江省2020届高三5月份高考数学能力提升试题
浙江省2020届高三5月份高考数学能力提升试题(已下线)第4章 数列 单元综合检测(难点)(单元培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)(已下线)专题1-2 简易逻辑(讲+练)-3(已下线)高二数学开学摸底考02(上海专用)(测试范围:必修三+选修一)-2023-2024学年高二数学下学期开学摸底考试卷(已下线)高二数学开学摸底考 01(上海专用)(沪教版2020必修三+选修一)-2023-2024学年高二数学下学期开学摸底考试卷
名校
5 . 某制药公司研制了一款针对某种病毒的新疫苗.该病毒一般通过病鼠与白鼠之间的接触传染,现有
只白鼠,每只白鼠在接触病鼠后被感染的概率为
,被感染的白鼠数用随机变量
表示,假设每只白鼠是否被感染之间相互独立.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/f0528c14-a111-4be5-8f43-28a868101679.png?resizew=368)
(1)若
,求数学期望
;
(2)接种疫苗后的白鼠被病鼠感染的概率为
,现有两个不同的研究团队理论研究发现概率
与参数
的取值有关.团队
提出函数模型为
,团队
提出函数模型为
.现将白鼠分成10组,每组10只,进行实验,随机变量
表示第
组被感染的白鼠数,现将随机变量
的实验结果
绘制成频数分布图,如图所示.假设每组白鼠是否被感染之间相互独立.
①试写出事件“
”发生的概率表达式(用
表示,组合数不必计算);
②在统计学中,若参数
时使得概率
最大,称
是
的最大似然估计.根据这一原理和团队
,
提出的函数模型,判断哪个团队的函数模型可以求出
的最大似然估计,并求出估计值.
参考数据:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/f0528c14-a111-4be5-8f43-28a868101679.png?resizew=368)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2271b2588b659d5c2b466afd1e39359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc79c66ebaacd709ec9965b90a22b14.png)
(2)接种疫苗后的白鼠被病鼠感染的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bd8e3bba8f56dafb5d52fe34d3cf7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61dcc2581dbddc8a76ce9a987a92ddaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820ef5942e54b4e9726d0d68846ac718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a451743fb161d7f306e5ede38b5b7922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a451743fb161d7f306e5ede38b5b7922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e5e9fb519cf75f4682c402b083ca23.png)
①试写出事件“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a168646663fae1ed924ab8988108d41f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
②在统计学中,若参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ba7a71c56fe7355a2b3ad5bade55ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b0d5649ec6dea09072c9fadabccccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4438bae1705c0f26beddf41322c087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dfe3b5856f033cb12165d98226bff75.png)
您最近一年使用:0次
2020-12-29更新
|
1210次组卷
|
5卷引用:重庆市第八中学2021届高三上学期高考适应性月考(四)数学试题
重庆市第八中学2021届高三上学期高考适应性月考(四)数学试题重庆市綦江实验中学2021届高三上学期12月月考数学试题(已下线)【2023】【高二下】【期中考】【367】【高中数学】【马定超收集】(已下线)专题9-1 概率与统计及分布列归类(理)(讲+练)-1(已下线)第四篇 概率与统计 专题8 最大似然估计 微点2 最大似然估计综合训练
6 . 设
为不超过
的最大整数,
为
可能取到所有值的个数,
是数列
前
项的和,则下列四个结论中正确的个数为( )
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df1038200f2d97a52c716aab6c3bcb6.png)
②2020是数列
中的项
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0736a7c251c50892747aa6b80afd73f.png)
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5abfacbbc3e7a96aa9019ed419342d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fab6009ffb15a88bd843a1c2b8d7770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7f9c2f83cd97a5dffe47eefc47990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9d102666ae7ef17d4a020105b7d08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df1038200f2d97a52c716aab6c3bcb6.png)
②2020是数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0736a7c251c50892747aa6b80afd73f.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5abfacbbc3e7a96aa9019ed419342d1.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2018高二上·浙江·学业考试
解题方法
7 . 设函数
,
,
.
(1)已知
在区间
上单调递减,求
的取值范围;
(2)存在实数
,使得当
时,
恒成立,求
的最大值及此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5965ab6b5f60b6b97c1273d3c347e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bea12f2c2e9e59e73b5ee0566dff9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42f54feac6ed738a868ecd53d3a85a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c835c223c5624fe31b645583e78955f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
8 . 已知函数
.
(1)证明:
时,
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9a6a0ad0a5ee53205ac42a6261fa03.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b9a926eb1876d017ce1198e32efec6.png)
您最近一年使用:0次
2020-12-14更新
|
1693次组卷
|
7卷引用:安徽省池州市东至县2020-2021学年高三上学期12月大联考数学(文)试题
安徽省池州市东至县2020-2021学年高三上学期12月大联考数学(文)试题安徽省全省名校实验班2020-2021学年高三上学期大联考文科数学试题(已下线)专题04 利用导数证明不等式 第一篇 热点、难点突破篇(讲)- 2021年高考二轮复习讲练测(浙江专用)(已下线)专题15 函数、数列、三角函数中大小比较问题(讲)-2021年高三数学二轮复习讲练测 (新高考版)(已下线)专题04 利用导数证明不等式(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》江苏省苏州市张家港市2022-2023学年高三上学期1月期末数学试题(已下线)第三章 重点专攻二 不等式的证明问题(讲)
解题方法
9 . 如图,在四棱锥
中,底面
是矩形,侧面
底面
,
是边长为
的等边三角形,点
分别为侧棱
上的动点,记
,则
的最小值的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b81c01cc7eda0e228f6e2698a009cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1cf0e03059d771b4148356396a4908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/a9da7095-10d3-48db-ba34-2c82bb5d3222.png?resizew=266)
您最近一年使用:0次
19-20高一·浙江·期末
解题方法
10 . 已知函数
.
(1)当
时,求
的值;
(2)当
时,关于x的不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af5bcc0bf0b726ebcea294a59a6b509.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c76489109dcec3a16b704aa962a9d0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffdb28f19ce369254beb85fac376142.png)
您最近一年使用:0次