设
,已知函数
,
.
(1)若
是
的零点,求不等式
的解集:
(2)当
时,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b17a4b14ea764bdbe93aea9359bb7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda7a4f92a4c6aa9a158a779e2a7c71c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089a407016a48bd18f7ccb79355e8f1a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132d41feaf28a5d96470d23780262b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04bd9759565e4cd93839a2ce2b31b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2019-09-13 00:53:51
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】设函数
.
(1)求不等式
的解集;
(2)若关于
的不等式
的解集为R,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a1551eabdbfb3d6f089b24fa651bfe.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88efe7c5e1934e8086ba41b50058ca90.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2aae4a06e780aca2ad4ce41a5a350d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02547e4761f9ee30db34c4e271a0451c.png)
(1)求
的解集;
(2)若
的最小值为T,正数a,b满足
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02547e4761f9ee30db34c4e271a0451c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d0cd47609b9d1865dfff4979161cf5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cacba5ff2b7013161ff41a1d1f6b9a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b3bb26c8ac14b52a7185a4770e3fe0.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知函数
.
(1)若
时,
恒成立,求
的取值范围;
(2)若
的最小值为1,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae1ab90d605163760f594ad166f187f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def239548f628aa0f3fdb08a3a4bfca9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10326bb0a5b7ba71695f54e242fbeda3.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2】选修4-5:不等式选讲
已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29c670ad4388998d95c5e1bac01a9cd.png)
(1)当
时,解不等式
;
(2)不等式
在
时恒成立,求
的取值范围
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29c670ad4388998d95c5e1bac01a9cd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db4d023caa46bc2b9779b06771310.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dbd58b21a94cf93f4623c07452b102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f851f9849dfe2c3306d20d06f712069d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次