解题方法
1 . 已知
,函数
.
(1)当
时,求函数
的单调区间;
(2)当
时,求函数
在
上的最小值.
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572608365166592/1572608371556352/STEM/ae2d95f0e6ba40ab86642d3456106f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f520cd6d17408bf4eeb8bb902f46ac.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf105efd4cf5f580d0561e54d923e347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af21c55c0038bf249efd676e59a632a1.png)
您最近一年使用:0次
解题方法
2 . 已知函数
(x∈[1,+∞)且m<1).
(Ⅰ)用定义证明函数f(x)在[1,+∞)上为增函数;
(Ⅱ)设函数
,若[2,5]是g(x)的一个单调区间,且在该区间上g(x)>0恒成立,求实数m的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572491721449472/1572491726790656/STEM/a0ac6097167042afad8480832e39ad8e.png)
(Ⅰ)用定义证明函数f(x)在[1,+∞)上为增函数;
(Ⅱ)设函数
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572491721449472/1572491726790656/STEM/a0de9f72d3604e009790f4042c435656.png)
您最近一年使用:0次
名校
3 . 已知函数
是二次函数,且满足
;函数
.
(1)求
的解析式;
(2)若
,且
对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502a3e71e6facc474b3e6556cfabd44b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89917d511c8a58cd7f2dacde350661ae.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e917280b43f34c1825e553b6795b9ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00ca630eb18d9fe595ede71496ca139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5504c3fb6b322d364831bfef214a0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-04更新
|
1317次组卷
|
6卷引用:2015-2016学年广东省汕头市金山中学高一上期末数学试卷
名校
解题方法
4 . 已知
是定义在
上的奇函数,当
时,函数的解析式为
.
(1)写出
在
上的解析式;
(2)求
在
上的最大值.
(3)对任意的
都有
成立,求最小的整数M的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f135d3c6b0d38bb3673e52b35337f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efe66db991b562c73ffb16c1e585870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbe732d822236b2c05b3ad133fd5bbf.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a50188f84f379b3d0418c54cbade7d7.png)
(3)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f7b4999675afe509fd22462a0338d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bec2b5d68a56315b5c84adea9e35b2.png)
您最近一年使用:0次
2016-12-03更新
|
589次组卷
|
2卷引用:广东省深圳市耀华实验学校2018-2019学年高一上学期期末考试数学试题
解题方法
5 . 设函数
是定义在
上的函数,并且满足下面三个条件:(1)对任意正数
,都有
;(2)当
时,
;(3)
,
(Ⅰ)求
、
的值;
(Ⅱ)若不等式
成立,求x的取值范围.
(Ⅲ)若存在正数
,使得不等式
有解,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7822f361618da0965955d7bc25c4b49c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6521ef75f0a05fe62cdfd2fbbe0430b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f91e401aa4c557085d25e04d92e813bf.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1add45b8dfdfd604c0570cca3a73b1b.png)
(Ⅱ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61c543eceb657941e8aabfc87170102.png)
(Ⅲ)若存在正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acc151e3fc70a4d2cf4f011fde3e5ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
6 . 在实数的原有运算法则中,我们补充定义新运算“⊙”如下:当
时,
⊙
=
;当
<
时,
⊙
=
,则函数
=(1⊙
)
(2⊙
) (
)的最大值等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254ea7edd675ccc450be96a18bcd8441.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/420590786172495eb52e09e3a34b9321.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/b474656b15b345388a7a72265a06200a.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/420590786172495eb52e09e3a34b9321.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/420590786172495eb52e09e3a34b9321.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/b474656b15b345388a7a72265a06200a.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/420590786172495eb52e09e3a34b9321.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/b474656b15b345388a7a72265a06200a.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/523c2eb3916f4fcca194694bcd0f96ef.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/62b2d872394144dc8bbbc1288e829ae3.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/f1d5eaf8482c4142aec0e17ad8ba8f51.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/e6f2c189a45c42c38cb98ae17f8bb0e4.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572160975085568/1572160980213760/STEM/f1d5eaf8482c4142aec0e17ad8ba8f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b6e2ac09e6a5d3a40d04c01d1d1ec3.png)
A.![]() | B.![]() | C.![]() | D.12 |
您最近一年使用:0次
2014高三·全国·专题练习
真题
名校
7 . 设f(x)=
sin3x+cos3x,若对任意实数x都有|f(x)|≤a,则实数a的取值范围是________________________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
您最近一年使用:0次
2016-12-03更新
|
1724次组卷
|
6卷引用:广东省阳江市第三中学2017-2018学年高一下学期期末考试数学试题
广东省阳江市第三中学2017-2018学年高一下学期期末考试数学试题(已下线)2014年高考数学(文)二轮专题复习与测试选择填空限时训练1练习卷2013年普通高等学校招生全国统一考试文科数学(江西卷)(已下线)专题13 三角函数的综合应用-十年(2011-2020)高考真题数学分项(一)云南省保山第九中学2021届高三上学期阶段测试文科数学试题江苏省泰州市姜堰第二中学2020-2021学年高三上学期学情检测一数学试题
14-15高三上·广东中山·期末
8 . 已知函数
,
(其中
为常数);
(Ⅰ)如果函数
和
有相同的极值点,求
的值;
(Ⅱ)设
,问是否存在
,使得
,若存在,请求出实数
的取值范围;若不存在,请说明理由.
(Ⅲ)记函数
,若函数
有5个不同的零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1accdfa489856dd40bd056f002cb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2930d2fd69ff3e8aca7fd875ad01dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅰ)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22a41d160b86b8c08e649e61825c53d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fddbca21e68bfe772a5fc43d8cb785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4afa7a1e36444b3f54ba089981ca86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1776097ac2b4b38d83b20656ffc762e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
12-13高二下·广东·期末
解题方法
9 . 对于函数
,如果存在区间
,同时满足下列条件:①
在
内是单调的;②当定义域是
时,
的值域也是
,则称
是该函数的“和谐区间”.若函数
存在“和谐区间”,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b98c093555bc2fac382969593eb0c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9-10高一·湖北黄冈·期末
解题方法
10 . 已知函数
,
,且
对
恒成立.
(1)求a、b的值;
(2)若对
,不等式
恒成立,求实数m的取值范围.
(3)记
,那么当
时,是否存在区间
(
),使得函数
在区间
上的值域恰好为
?若存在,请求出区间
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cacf4a593a5dd327c323627138d19178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea52cb4f29f59193157902d2c97e8fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8422d46bdf50307811832a9ce18291cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
(1)求a、b的值;
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796ce08e8b7e5dbfd011fcbdee171d0e.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327c004b7b58a6e4b08a520e9d04fcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f98024af29776153a5ec7395cf24dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c042bfa9459620418970f38c0cc7d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
您最近一年使用:0次