解题方法
1 . 已知函数
(
,且
)是定义在
上的奇函数.
(1)若
,不等式
对任意的
恒成立,求实数
的取值范围;
(2)若
且
在
上的最小值为0,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a726955bcdff5d5f3e89d60a22620d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f3df8bf24d2c68add3f3de3efc4147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0245ff041f4fddc995ef19bc8f722684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fbec93189276445b83c6df4e9f4866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df69e876cb70b7a8e91909e11d7031c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2 . 若函数
在区间
上为增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3899cb751041a2960a92e9632e534c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9006ed5e53e4637fbacec7832dfe2146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
3 . 已知函数
(
).
(1)若函数
在区间
上的最小值为1,求实数m的值;
(2)若函数
,其中
为奇函数,
为偶函数,不等式
对任意
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df297a65e44453450e185ed355b5741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc50f609440a36953561a88e8acfee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e652934eb770d1762e1a81f48e98937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
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名校
解题方法
4 . 定义函数
(其中
为自变量,
为常数).
(Ⅰ)若当
时,函数
的最小值为-1,求实数
的值;
(Ⅱ)设全集
,已知集合
,
,若集合
,
满足
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67625d791d57e780f56f7b5b8454679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅰ)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737521fef4ad8f44bc9ee866d1a2f3b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)设全集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288101fe6bfd3d8ee5722ebe22bc5015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f028fb2c548058a596b30fdf1b134a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98fd7f4faeb1df9848a2db897204a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-18更新
|
617次组卷
|
3卷引用:四川省成都市彭州中学2018-2019学年高一下学期3月月考数学(理)试题
5 . 已知函数
图象经过点
,函数
.
(1)求函数
的解析式;
(2)是否存在实数
,使得
在
上的最小值为3?若存在,求出
的值;若不存在,请说明理由;
(3)在(2)的条件下若存在实数
,使得不等式
在
时能成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e719252ceff26414b576dcf546f39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e7d192c1c988462b773b36fe0bc169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175df45ead62a4fca9bcd9dcb225ad10.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfa6efc0b253e832e2c7c608e04f6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)在(2)的条件下若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e206396891132d2a6bc49c11c598aed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfa6efc0b253e832e2c7c608e04f6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
6 . 已知函数
.
(1)若不等式
在
上恒成立,求a的取值范围;
(2)若函数
恰好有三个零点,求b的值及该函数的零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65cfd75524b56fc7852c6244042e731.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2929fdc7176d040348d473ea34f06ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed8d039bccac42595311ba4d28f319b.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10af09197a1ff24194e65440fee115da.png)
您最近一年使用:0次
2020-02-13更新
|
890次组卷
|
4卷引用:四川省棠湖中学2019-2020学年高一下学期期中考试数学试题
7 . 若直线
:
与圆
:
交于
,
两点,
为原点,
的面积为
.
(1)将
表示成
的函数
;
(2)是否存在实数
使
有最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df223208b377412bad4d35d6ea143de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6765a87bcc2b6d44aabdee9af73e6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8472ba3d0dbee85358d16afca0506f.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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2020-02-05更新
|
186次组卷
|
2卷引用:四川省自贡市2019-2020学年高二年级上学期期末文科数学试题
8 . 已知
是奇函数(e为自然对数的底数).
(1)求实数a的值;
(2)求函数
在
上的值域;
(3)令
,求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5f1752d561abce17030d19449f67f7.png)
(1)求实数a的值;
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009a7d212fce8d7fabda2e2edd34de1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168163183a3d4663be45755f44676191.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b533977c0ef10d1c9134d9f0a259bb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aead2cf0f4e062bf85695fd30d79786.png)
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2020-02-01更新
|
1020次组卷
|
2卷引用:四川省巴中市巴州区2021-2022学年高一上学期期末数学试题
名校
9 . 对于定义域为
的函数,若果存在区间
,同时满足下列条件:①
在区间
上是单调的;②当定义域是
时,
的值域也是
.则称
是函数
的一个“优美区间”.
(1)证明:函数
不存在“优美区间”.
(2)已知函数
在
上存在“优美区间”,请求出他的“优美区间”.
(3)如果
是函数
的一个“优美区间”,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f200a1a0d48e0bb76d8dfe5d45ccae27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194af97d43b545e7719cfa866fee194c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194af97d43b545e7719cfa866fee194c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194af97d43b545e7719cfa866fee194c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194af97d43b545e7719cfa866fee194c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6672395f6806c5ece5d2625dda48a66.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db9ddb5600d77c0306734ac656b84cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194af97d43b545e7719cfa866fee194c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4557eadd43086e14b99d3602b02081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
您最近一年使用:0次
2020-01-19更新
|
504次组卷
|
4卷引用:四川省成都市树德中学2019-2020学年高一上学期11月阶段性检测数学试题
10 . 已知函数f(x)=|2x﹣3|+x+1.
(1)求函数f(x)的最小值;
(2)当x≥1时,关于x的不等式f(2x)<4x+2a恒成立,求实数a的取值范围.
(1)求函数f(x)的最小值;
(2)当x≥1时,关于x的不等式f(2x)<4x+2a恒成立,求实数a的取值范围.
您最近一年使用:0次
2020-01-19更新
|
96次组卷
|
2卷引用:四川省达州市2018-2019学年高一上学期期末数学试题