已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd5cb9848134c0885913ecd588fd0ed.png)
(1)当
时,解不等式
;
(2)若函数
的值域为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd5cb9848134c0885913ecd588fd0ed.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef66c2daa891724bceec0a6318f0a8f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-03-19 16:45:52
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知定义在区间
上的函数
.
(1)求不等式
的解集;
(2)设函数
,
,若对任意的
,总存在
,使得
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c6fa8b04f872c6d73e11b4ca499035.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee61811313868a7b4ec3ffd7b538a3dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e07afb2bf68f160cdd18ea64094fc92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc657c0b715e190f59ad61d765c86f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc224108116b12e2282b65c38edf435a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.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】已知集合
.
(1)求
;
(2)若
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8849a9a14f825341b829204f68958b25.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195cf88b6ec2d8a71f7da0e79020f35f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eb5935678e432e6f1f3180bfdb3175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622b3e88f7f2bd5ea2211118d43c7e6a.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)
名校
【推荐3】设函数
.
(1)若
的解集是
,求实数
的值;
(2)若
恒成立,求实数
的取值范围;
(3)当
时,
,关于
的不等式
在
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0ca1e306cfa65d45b189568e5aaeb7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1d2f98caea906d26aee92ea178551a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b95728f351ff334dd6cd9e1ec8d6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc324a270abca61a1c03313043ae1403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4066d5cb9f56aa04ab8a1fb056012a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae3777d65a4e4a642c6772a1870c8b9.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1】已知函数
,
.
(1)若
,求x的取值范围;
(2)若
的最小值为m,且正实数a,b,c,满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ad4836383234fa1d021616f1d1d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14cb6ab822bb32ff2b0a9b76e17e5daf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178e80b468421c380d4028c5905720fd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4070c1543f3827dfa1594a97e123a11b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcd56cb058b136a4b02599e4ea857de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac612374af7d3af718d7246c14e517b1.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】设函数
.
(1)求不等式
的解集;
(2)若
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59eefbae0aa742fadce3d76209624c31.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608a57caffde627dbf140ca22a2ff8a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3e9e6bc47e54586f21619e92171df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次