(1)计算
.
(2)已知
,解关于
不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f466507474ebd6869b6cbfc54cc90cf5.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1da557e4c2beb847e7912df08d772c.png)
更新时间:2023-12-19 21:46:15
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f6b2ac4aa677c07dc20c2cf78ccfd1.png)
(2)已知
,
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f6b2ac4aa677c07dc20c2cf78ccfd1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e4fc7489911b0da3cc5d7194d9c6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d2b50b02386009ac9bed0ae4f8fd92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3884b343d76a26b4b85b48987d7064.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
.
(1)当
,
时,
有最小值2,求
的值;
(2)当
,
时,总有
成立,求实数
的取值范围.
(提示:函数
在区间
上单调递减,在区间
上单调递增)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63e2204bc637ba52e63bb163be4c8da.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15a13b4190ac3d5feaee27a4c97b21b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f53acc676c43c13aa47dcc3e2719b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(提示:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1305b9abebd7bef3171486df157286b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.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:全集
,函数
的定义域为集合
,集合![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/22126789b4bc410693082d9b0b54966e.png)
(1)求
;
(2)若
,求实数
的范围.
![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/1cfbb038ea3f4ca2a36da0834c98d17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5617f87cba2a387d7b38735e7c818cff.png)
![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/b0c1543c9a9e4b2ba455d3b31f66a27b.png)
![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/22126789b4bc410693082d9b0b54966e.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/f9f7b01ef65d4564bc608d39f9d4a060.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/ddae2820bd1248f18ef782dc69cf7a6d.png)
![](https://img.xkw.com/dksih/QBM/2013/11/8/1571385323724800/1571385329451008/STEM/a0ab3484c0354e968033d67e33cc5094.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】已知二次函数
,
为实数.
(1)若不等式
的解集为
,求
的值;
(2)当
时,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb9ad466c2dcbbe064bad2828ea0ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8023e1902803a7939d2aa32ba9e2d44f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7e88b74f492f89e21e4cf65353bdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abed293a3fa2ef06fddf2432194653a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8023e1902803a7939d2aa32ba9e2d44f.png)
您最近一年使用:0次