名校
解题方法
1 . 对于两个定义域均为D的函数f(x),g(x),若存在最小正实数M,使得对于任意x∈D,都有|f(x)-g(x)|≤M,则称M为函数f(x),g(x)的“差距”,并记作||f(x),g(x)||.
(1)求f(x)=sinx(x∈R),g(x)=cosx(x∈R)的差距;
(2)设f(x)=
(x∈[1,
]),g(x)=mlnx (x∈[1,
]).(e≈2.718)
①若m=2,且||f(x),g(x)||=1,求满足条件的最大正整数a;
②若a=2,且||f(x),g(x)||=2,求实数m的取值范围.
(1)求f(x)=sinx(x∈R),g(x)=cosx(x∈R)的差距;
(2)设f(x)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f457e696b1504bfb73140699a8e18dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9f52368ac9997d081da50df417df65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9f52368ac9997d081da50df417df65.png)
①若m=2,且||f(x),g(x)||=1,求满足条件的最大正整数a;
②若a=2,且||f(x),g(x)||=2,求实数m的取值范围.
您最近一年使用:0次
2016-12-13更新
|
429次组卷
|
2卷引用:2017届江苏扬州中学等七校高三上期中联考数学试卷
解题方法
2 . 在平面直角坐标系
中,椭圆
:
的离心率为
,右焦点
,点
在椭圆
上,且在第一象限内,直线
与圆
:
相切于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/00f7b187-6ed3-4096-9b16-4a95e04ea98e.png?resizew=230)
(1)求椭圆
的方程;
(2)求
的取值范围;
(3)若
,求点
的纵坐标
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74c4299221a967507c6a179337581a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/00f7b187-6ed3-4096-9b16-4a95e04ea98e.png?resizew=230)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6382639c350174bb054eb3ceb86574b1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
3 . 已知函数
(
为自然对数的底数).
(1) 若
,求函数
的单调区间;
(2) 若
,且方程
在
内有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72973b06f1fbd83aa0b0622ee9500eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1) 若
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572562302566400/1572562308554752/STEM/101e3221a50745af9f8c144da37bf40f.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572562302566400/1572562308554752/STEM/b125edc549744b2586735c5c73287d2c.png)
(2) 若
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572562302566400/1572562308554752/STEM/1732ac1934b64e699e8b6da957383dae.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572562302566400/1572562308554752/STEM/f294672333324e1ebc8d15e98e1cd45e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572562302566400/1572562308554752/STEM/a710a2666e1f4f529eb32c93637af600.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572562302566400/1572562308554752/STEM/913707a78e294382815dc2db050285e6.png)
您最近一年使用:0次
4 . 平行四边形
中,
为平行四边形内一点,且
,若
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff5008fe83aea3a19d7b727ee3f8359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a14fbc8d21a2afb874ed838ee99f00.png)
![](https://img.xkw.com/dksih/QBM/2016/10/26/1573095179591680/1573095185776640/STEM/2110e5ecda954e1db20ee0d2b97e435f.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e0c879a556f05831aac3940bfcec2d.png)
您最近一年使用:0次
2016-12-04更新
|
1850次组卷
|
2卷引用:2016届江苏省扬州中学高三3月质量检测数学试卷
名校
5 . 已知两个无穷数列
分别满足
,
,
其中
,设数列
的前
项和分别为
,
(1)若数列
都为递增数列,求数列
的通项公式;
(2)若数列
满足:存在唯一的正整数
(
),使得
,称数列
为“
坠点数列”
①若数列
为“5坠点数列”,求
;
②若数列
为“
坠点数列”,数列
为“
坠点数列”,是否存在正整数
,使得
,若存在,求
的最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcba920904a03e3f950e962cc8c7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c24b7044e015a244ab14ec40ebf6ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a709a6666d117c55ecf9604fa97b4ec7.png)
其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d726666f99a5a41dd673a2330e377b17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcba920904a03e3f950e962cc8c7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478421b81927e435cbcf5acafa89efd7.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcba920904a03e3f950e962cc8c7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcba920904a03e3f950e962cc8c7ad.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1707546ddf59ebb4e539acc2d33c18c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6bd87566c26446e13f685f419376f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
①若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
②若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45a4a72bdca2a17b689b34387e816d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2016-12-04更新
|
425次组卷
|
7卷引用:2016届江苏省扬州中学高三3月质量检测数学试卷
2016届江苏省扬州中学高三3月质量检测数学试卷2016届江苏省苏州大学高考考前指导卷2数学试卷2016届上海市浦东新区高三上学期期末质量抽测数学试题江苏省泰州中学2018届高三上学期开学考试数学试题(已下线)《2018届优等生百日闯关系列》【江苏版】专题二 第五关 以子数列或生成数列为背景的解答题(已下线)《2018届优等生百日闯关系列》【江苏版】专题二 第六关 以新定义数列为背景的解答题上海市西南位育中学2019-2020学年高三上学期期中数学试题
解题方法
6 . 已知函数
是定义在
上的奇函数,当
时,
.若集合
,则实数
的取值范围为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025b829d071797e475f8999de04ba7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f820c7d3c1233c574d641c6741b22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-04更新
|
539次组卷
|
5卷引用:2016届江苏省扬州市高三上学期期末调研考试数学试卷
2016届江苏省扬州市高三上学期期末调研考试数学试卷2016届江苏省扬州市高三上学期期末数学试卷(已下线)2018年高考二轮复习测试专项【新课标理科】热点二 基本初等函数中含有参数问题(已下线)2018年高考二轮复习测试专项【新课标文科】热点二 基本初等函数中含有参数问题2020届江苏省南通市高三下学期4月高考模拟数学试题
7 . 已知函数f(x)=(ax2+x+2)ex(a>0),其中e是自然对数的底数.
(1)当a=2时,求f(x)的极值;
(2)若f(x)在[﹣2,2]上是单调增函数,求a的取值范围;
(3)当a=1时,求整数t的所有值,使方程f(x)=x+4在[t,t+1]上有解.
(1)当a=2时,求f(x)的极值;
(2)若f(x)在[﹣2,2]上是单调增函数,求a的取值范围;
(3)当a=1时,求整数t的所有值,使方程f(x)=x+4在[t,t+1]上有解.
您最近一年使用:0次
8 . 若数列{an}中不超过f(m)的项数恰为bm(m∈N*),则称数列{bm}是数列{an}的生成数列,称相应的函数f(m)是数列{an}生成{bm}的控制函数.
(1)已知an=n2,且f(m)=m2,写出b1、b2、b3;
(2)已知an=2n,且f(m)=m,求{bm}的前m项和Sm;
(3)已知an=2n,且f(m)=Am3(A∈N*),若数列{bm}中,b1,b2,b3是公差为d(d≠0)的等差数列,且b3=10,求d的值及A的值.
(1)已知an=n2,且f(m)=m2,写出b1、b2、b3;
(2)已知an=2n,且f(m)=m,求{bm}的前m项和Sm;
(3)已知an=2n,且f(m)=Am3(A∈N*),若数列{bm}中,b1,b2,b3是公差为d(d≠0)的等差数列,且b3=10,求d的值及A的值.
您最近一年使用:0次
9 . 已知
,
,
,若
,则
=____ .
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527943237632/1572527949119488/STEM/31d86380337a4c5f93b112f861d71932.png?resizew=148)
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527943237632/1572527949119488/STEM/b07a1d80678448d9be9c7071352ff065.png?resizew=84)
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527943237632/1572527949119488/STEM/2c2f8093cd5743eba6a6f7b64c6b1c8c.png?resizew=138)
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527943237632/1572527949119488/STEM/9b32f81ca6d64845a63c8de81817fb85.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2016/3/9/1572527943237632/1572527949119488/STEM/3c2394d1fd0e4a578bc4a02e3243afcf.png?resizew=118)
您最近一年使用:0次
10 . 如图,已知椭圆
(
)的左、右焦点为
、
,
是椭圆上一点,
在
上,且满足
(
),
,
为坐标原点.
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/759a05accc9d4943bbd737ea7b75da39.png)
(1)若椭圆方程为
,且
,求点
的横坐标;
(2)若
,求椭圆离心率
的取值范围
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/e3d719efa85e490786f9b40a2572675e.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/0036e1bacc684e55ab37bb2580e7e19c.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/1b1f696cb25d4412841f3b34e6df0f48.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/7ff5f3a8b6824caa97789086cf28c187.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/3040a2391b9d4994ba9c3c1674766094.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/6918027106f34d30968b116296619b8e.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/3bc78a940c8e4fa4a0d78a010d420f1c.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/89b2cf4cd5594e79855f79385d67bb32.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/7655bb341cdf489cacaca015957fd033.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/b79f403736c148f188c8e3b328a57f88.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/49eaadc8ad5c407f858e2cb2c9f80c25.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/759a05accc9d4943bbd737ea7b75da39.png)
(1)若椭圆方程为
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/52fd5fef05e342f7af7640b62abcada1.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/2c9c1e04de7c476e8f2c70f9d4c693cd.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/6918027106f34d30968b116296619b8e.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/deaf27b75a7c4240ac80d52c37ba7ddb.png)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572473779306496/1572473785466880/STEM/138a6714c6b243ea8df7b8d03ce4659e.png)
您最近一年使用:0次