关于x的不等式
的解集为
,
(1)求a,b的值;
(2)当
,且满足
时,有
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aadb7a1b978913607f470c3059c3c8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c33b69adc112831fa115b5dffdb616.png)
(1)求a,b的值;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953521e0c0ec1c417d7ca2197d8c601e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f3fac0d062e143385ec9d2e48ebcba.png)
更新时间:2021-12-25 13:26:43
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】关于
的不等式组
的整数解的集合为
.
(1)当
时,求集合
;
(2)若集合
,求实数
的取值范围;
(3)若集合A中有2023个元素,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd01c8cbd1652406a7e9ef6e385c860b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367e788c32187ae2cc97aaa24da1d40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfedff3301c09cac5f040c36e1fe0fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若集合A中有2023个元素,求实数
![](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
解题方法
【推荐2】已知函数
关于
的不等式
的解集为
.
(1)求实数
的值;
(2)求关于
的不等式
的解集;
(3)若关于
的方程
有两个不相等的实数根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d18872663c4a3f45e53155d1cdbb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72d20f1bf6d42731872b4554cf81a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae35eefd4b31e3374cb6e80123fd1e30.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a377d2bfd2c28f3ad10ff9b1ac2e38.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
解题方法
【推荐1】已知二次函数
满足
,且
.
(1)求
的解析式;
(2)当
时,不等式
恒成立;求实数
的取值范围;
(3)设
,
求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42b6975b22e99c0148e6952d174ebba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee77412e89c659e78054fa6f192b447.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24aa16b780156e18f12baa2b8ee0f9a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e89fb1168461331907a3ec59427d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90941c0beef4ec82a6f16b9565a28009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487fff44e0f761dfa074b976ef9c9aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c258f572aea4856fd947cd8ee40acd41.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】已知二次函数
,对任意
都有
,且
.
(1)求函数
的解析式;
(2)若对于
,不等式
恒成立,求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663ec6e81eb495df5c251944f4db0ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f4db45b352924b607726828c37467a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc11aca7323cf59bfa48c434bf134576.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769001bb8fcc449918023e4462cffaaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a9495efe38a7055b72dd972db6bfdc.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1】已知
都是正数,
(1)若
,求
的最大值
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d708cb763716467219215cdc0782c0a6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2232ea18d0e98280c2f172a86c62dbfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786e8781b47923d4b287523950a39b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在
中,a、b、c分别是内角A、B、C的对边,且
;
(1)求角A的大小;
(2)若
,
的面积为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f374b83283d6c151a5a7670fc9dc7200.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52bc912794df9a0cf7e4eecbc2e0f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fb8acdbdbb955e8de82752064fff7b.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】已知函数
.
(1)求不等式
的解集;
(2)若
的最大值为
,正数
,
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2452bb01dc0ccaed5a7ef02c84bfcbd5.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709db55f0b99a5023eda64def7d72ea2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae2fdde309a150602b1f5073b5940ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0ba25ed63bc3ac6412d4a1dc876928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe0469b17cb344e7748f8f3def8a0840.png)
您最近一年使用:0次