已知函数
.
(1)若
,
的最大值为4,求
的解集;
(2)若
时,
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5b529d58b51f5d8bcf5538221cf85b.png)
(1)若
![](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/a0abe4960954bb3144b7e86d4233e747.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efe66db991b562c73ffb16c1e585870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173f99d0a0cf852179fe8cf28d7c5332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-04-16 22:22:59
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)若
,求不等式
的解集;
(2)若
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad4b09ca1cbdbb83e84bc3c986f3427.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4827f79723c41bd35bf4871bcac58907.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0825cd5a30edda8adaab033284191a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
.
(1)若
,解不等式
;
(2)对任意满足
的正实数
,若总存在实数
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5855e2a5e61d3e6eb98f032e10e43dea.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990d3feee85e869ea9ab561ff63d46a2.png)
(2)对任意满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f371d431b6c91972b742c426c8a81ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3dd140c89215d76920a44b72dbb0852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
.
(1)若
,求实数x的取值范围;
(2)求
的最大值.
![](https://img.xkw.com/dksih/QBM/2014/2/19/1571511033282560/1571511038959616/STEM/c3e4d4dbb0d7415c8f120cf5ccfcf99a.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2014/2/19/1571511033282560/1571511038959616/STEM/14c0d1c84bf24280b8f8963721db38c4.png)
(2)求
![](https://img.xkw.com/dksih/QBM/2014/2/19/1571511033282560/1571511038959616/STEM/53d25f97f5054dab8e4106df59345a79.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】设函数
.
(1)当
时,求
的图象与直线
围成的区域的面积;
(2)若
的最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674b93bf77fd0dad323bceececd4b27c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)当
时,求不等式
的解集;
(2)设
,且当
时,都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb32b38337f025a640ac3980b170786.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65236592312fc7def2cfbed202a8f887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665dc334a37e61c356b636604eb0f8c3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b244a88c2fbf268ba5438b73531dd2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce62b4bb9fff97b0f9f61d8896efcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】对于无穷数列
,设集合
,若
为有限集,则称
为“
数列”.
(1)已知数列
满足
,
,判断
是否为“
数列”,并说明理由;
(2)已知
,数列
满足
,若
为“
数列”,求首项
的值;
(3)已知
,若
为“
数列”,试求实数
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e32f9ea92c6434097f959ac218939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c7507deb9d75d6e12c5c733a50cce.png)
(1)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15da161c85546d3b84e777cd467cec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c7507deb9d75d6e12c5c733a50cce.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2ee5cbe9d52bac24967a344604eb2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb30a3a05dcd974fb51ee94c662a3ac3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c7507deb9d75d6e12c5c733a50cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94634fe2a19a7642c30f0ed2b4d48338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c7507deb9d75d6e12c5c733a50cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次