解题方法
1 . 已知函数
.
(1)当a=2时,试判断
在
上的单调性,并证明;
(2)若
时,
是减函数,
时,
是增函数,试求a的值及
上
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee15664d5a8e127810c71f4e5d33214.png)
(1)当a=2时,试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce2594833690eedb3328fe747feb3a3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaae91ed6da60e86e3bb9b3eb7e03e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce2594833690eedb3328fe747feb3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce2594833690eedb3328fe747feb3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
名校
2 . 已知函数
在
上为奇函数,
,
.
(1)求实数
的值并指出函数
的单调性(单调性不需要证明);
(2)设存在
,使
成立;请问是否存在
的值,使
最小值为
,若存在求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7652a7606a7c65ffd9f46318f2a57f5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f78be1e7722a2b5278223669dffcbfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1359b9d7aac57284a7886ab2a7b1b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459c84c9addfbd1cdd0a877ba7c584e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-01-12更新
|
554次组卷
|
6卷引用:江苏省扬州市宝应中学2022-2023学年高一上学期期末数学试题
名校
解题方法
3 . 已知定义在
上的函数
满足:①对任意的
,都有
;②当且仅当
时,
成立.
(1)求
;
(2)用定义证明
的单调性;
(3)若对
使得不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29ef32d9bc2e32ef2b8639b57dc9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3491851f0ca81d2649b5c7b5e41170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb07fc041df359b25b6b47bcc4d024e.png)
(2)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(3)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87008291cdba83461d58dbc9426d777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1a0e74cdd1b88109f7da0c9d5d8a72.png)
您最近一年使用:0次
2022-12-09更新
|
1454次组卷
|
6卷引用:四川省遂宁市遂宁高级实验学校2022-2023学年高一上学期期中数学试题
解题方法
4 . (1)已知函数
对任意的
,都有
,且当
时,
,求证:
是
上的增函数;
(2)若
是
上的增函数,且
,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9103d08cb43f689fc764f5ae9d355faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb05e60a6eaf4220c61370b26ee36e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f51d8a5194307ae9e440b0af7fd0789.png)
您最近一年使用:0次
解题方法
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a62eaa217135eabb48e71afc46d657.png)
(1)当
,证明函数在
上单调递减;
(2)当
时,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a62eaa217135eabb48e71afc46d657.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7020a6b646f85f77b4c58b3814b3426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0cae1a27e3ba3fd1f2909bf46008524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2022-07-15更新
|
1135次组卷
|
5卷引用:贵州省遵义市2021-2022学年高一下学期期末质量监测数学试题
贵州省遵义市2021-2022学年高一下学期期末质量监测数学试题贵州省遵义市2021-2022学年高一下学期期末质量监测数学试题(已下线)突破3.2 函数的基本性质(重难点突破)河北省行唐启明中学2022-2023学年高一上学期11月月考数学试题(已下线)3.2+函数的基本性质-【冲刺满分】
名校
6 . 设函数
.
(1)证明:
在区间
上单调递增;
(2)若
,使得
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3fd09aa6bd2c73f713869a28e38e30.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403c480d5654ad603e4106831b52910d.png)
您最近一年使用:0次
2021-12-23更新
|
647次组卷
|
3卷引用:山西省运城市教育发展联盟2021-2022学年高二上学期12月月考数学试题
解题方法
7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4961a3ad0f608709429e6d17b3a62f.png)
(1)证明函数
在区间
上是增函数;
(2)当
时,不等式
恒成立,求正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4961a3ad0f608709429e6d17b3a62f.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2c47b6e59f557b21dc90e9cf20b44a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fdf769d34983e69d8be4efd81914f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
.
(1)求函数
的解析式;
(2)若函数
,判断函数
在区间
上的单调性,并用定义证明;
(3)已知函数
在区间
上具有单调性,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f441e5ce6c2c9cacb445e190acf9db1.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92acace17d43431c5d414cdc3b624fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92634a7daabf9bce925f0d7507ea7526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa66623cf54b42d6d12be4c8edaa7071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-10-04更新
|
1472次组卷
|
3卷引用:广东省东莞市东莞高级中学2020-2021学年高一上学期第一次月考数学试题
名校
9 . 设函数
是定义在
上的函数,若存在
,使得
在
上单调递增,在
上单调递减,则称
为
上的单峰函数,
称为峰点,
称为含峰区间.
(1)判断下列函数中,哪些是
上的单峰函数?若是,指出峰点;若不是,说出原因:
,
,
,
;
(2)若函数
是区间
上的单峰函数,证明:对任意的
,
,若
,则
为含峰区间;若
,则
为含峰区间.
(3)若函数
是区间
上的单峰函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee49cd415b686374189f90102d23ef7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b23e032f76e2e0956198624f26c1d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e27a3b446b1cc26dd888ec3972d8c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
(1)判断下列函数中,哪些是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89a87d019e9a558607c6e3bc3ca1640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbc09781887e0604f1a04c705ea6068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c472c8dafe09b2d605521ed83af6a39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829ecc7b81ed083730f3445ff8f2577c.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9831f7677f1e05bdbce7edbdba4e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f348a0b693a24c92a2bebf7fa0dba2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bacfb2ce7a563ef6012537e0dcb80b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ee7abd882ba99660bca68ebf544cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3578b4efca76ca9f2a3d1d96508064bb.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e59e18ad23b6caff89caf98383bd35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa549dc0cca6a45acdcf5976f747fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
10 . 已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(1)证明:当
时,
在
单调递减,
单调递增;当
时,
在
单调递增;
(2)若
在
单调递增,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1982786864f37e6f954e8d70f9970620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(1)证明:当
![](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/53497a63db955eaf35c54a7236d01195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a964580f225a18d0ed933416dfb350c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189b2da6c420bf8f8900002d14f65f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次