1 . 给定数列
,若满足
且
,对于任意的n,
,都有
,则称数列
为“指数型数列”.
Ⅰ
已知数列
,
的通项公式分别为
,
,试判断
,
是不是“指数型数列”;
Ⅱ
若数列
满足:
,
,判断数列
是否为“指数型数列”,若是给出证明,若不是说明理由;
Ⅲ
若数列
是“指数型数列”,且
,证明:数列
中任意三项都不能构成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f5d7eb7518d6676fe5a7f56e64d516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc2e93cee2e6a921b66d250bd046b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613e96d4842008797a0f7071d48ce4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac67c97e7df5ccb0672b29266cd39eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1897b6556a77133581546a0b52f0095e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cdccd587b3a184c5315d090918137f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fa45d99faf476e983cd7d31a402135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efe4641b14935ac71265ba4211332f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54aacbbb02e19138e48dd07fca0e0813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b466697b27f8e73efd78431714b064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
您最近一年使用:0次
名校
2 . 某校实行选科分班制度,张毅同学的选择是地理、生物、政治这三科,且生物在
层班级.该校周一上午选科分班的课程安排如下表所示,张毅选择三个科目的课各上一节,另外一节上自习,则他不同的选课方法的种数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
第一节 | 第二节 | 第三节 | 第四节 |
地理1班 | 化学![]() | 地理2班 | 化学![]() |
生物![]() | 化学![]() | 生物![]() | 历史![]() |
物理![]() | 生物![]() | 物理![]() | 生物![]() |
物理![]() | 生物![]() | 物理![]() | 物理![]() |
政治1班 | 物理A层3班 | 政治2班 | 政治3班 |
A.4 | B.5 | C.6 | D.7 |
您最近一年使用:0次
2019-04-04更新
|
245次组卷
|
2卷引用:【区级联考】北京市海淀区2019届高三4月期中练习(一模)数学文试题
3 . 已知
在
处的切线方程为
.
(1)求
的解析式;
(2)求
的导函数
的零点个数;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2206dcf6822c59d85eaebfd437bed8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392a30b99aeb4aafc01ed98493283a58.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d31f9ce464f2ce3b24833b70595941c.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb1dc30d4b297c6d5d0d6d91eab1e3b.png)
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