1 . ①在高等数学中,关于极限的计算,常会用到:i)四则运算法则:如果
,
,则
,
,若
,则
;ii)洛必达法则1:若函数
,
的导函数分别为
,
,且
,
则
;②设
,k是大于1的正整数,若函数
满足:对
,均有
成立,则称函数
为区间
上的k阶无穷递降函数.结合以上两个信息,回答下列问题:
(1)计算:①
;
②
;
(2)试判断
是否为区间
上的2阶无穷递降函数;并证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89cbc2f466f483804905ea82d3faa5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e137fd4fc65a5c3992e32db3060fa46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999ffb5fc2f7c0b3aca42e902db0f680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00ff879851addbfa7fa4f80e099a653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d52399e72456de84f0a42dd69da06fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a02774dbbbfb146d928384de500d8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783c88951a458d5862557f2a041f817a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3927e9f1e25bfe84d4d03caa53d80196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f021edb6f6d256b0837b365db77b56d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0feda45cb840b1f30f3241998d82e5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061e376df45ffecd571d89704684214f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c316dece56752ea4023ed51b09adcb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e1f6cf8990c217af7e109120f35cc3.png)
(1)计算:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7529d1357e6d9e2343b2bb7fcb9aaf55.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15d5f4feda6efd2af4f1be9180ae504.png)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e40e451ed5164bec837f978fddd6413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e88cf1590641c7a45d48dfcccad70e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664710185651593168e63b90188b718a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
您最近一年使用:0次
2 . ①在微积分中,求极限有一种重要的数学工具——洛必达法则,法则中有一结论:若函数
,
的导函数分别为
,
,且
,则
;
②设
,k是大于1的正整数,若函数
满足:对任意
,均有
成立,且
,则称函数
为区间
上的k阶无穷递降函数.
结合以上两个信息,回答下列问题:
(1)证明
不是区间
上的2阶无穷递降函数;
(2)计算:
;
(3)记
,
;求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ceac3910b9f134bab0b92e8d9a9eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74acc4d2f565d7088e8d737718e89602.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e0c1abf0378a7f5d79672f622b275e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e54d86850a733707433da2e423a5c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580f20b900b6d8c9e90c84a0588ae74d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3e441923ed3c1a32720d6aeac2f599.png)
结合以上两个信息,回答下列问题:
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d1f6f459292de1002f863203ce91a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fab11f38ab8593932082ec4d9c8c91f.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8063898825e02107b7e04f6eba28cb8c.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602d05de8ada4a6f4d53bab28430f684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d40b0c4fd043d372c463db08659e779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caea9a696f22c76f8f4563ac45d124b1.png)
您最近一年使用:0次
2024-04-18更新
|
455次组卷
|
6卷引用:广东省广州市天河中学高中部2023-2024学年高二下学期基础测试数学试题
广东省广州市天河中学高中部2023-2024学年高二下学期基础测试数学试题(已下线)模块五 专题5 全真拔高模拟5(人教B版高二期中研习)四川省广安市华蓥中学2023-2024学年高二下学期4月月考数学试题广东省广州市天河中学2023-2024学年高二下学期第二次月考数学试题黑龙江省哈尔滨市双城区兆麟中学2023-2024学年高二下学期5月期中考试数学试题(已下线)专题14 洛必达法则的应用【练】