设函数
,定义域为A.
(1)若
,求实数a的取值范围;
(2)若不等式
在
上有解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aea4609d4f356adb06e8419de7228c4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843c3f388a75bf981c11ca947a86e5fa.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6626d048e5958223ffe396eca09bb82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
20-21高一上·江西南昌·期中 查看更多[1]
(已下线)【南昌新东方】江西省南昌市南昌县莲塘一中2020-2021学年高一上学期11月期中数学试题2
更新时间:2020-12-07 21:22:55
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相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】(1)若关于
的不等式
对任意的实数
恒成立,求实数
的取值范围;
(2)若不等式
对任意实数
恒成立,求实数
的取值范围;
(3)当
时,不等式
恒成立,求实数
的取值范围;
(4)已知函数
,当
时恒有
,求实数
的取值范围;
(5)已知函数
,若对于
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75492b275b0643258b711a13113073e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52649df12c43fe1a97fbc9920ea439cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a551a88ac426439803f564a3bbee04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9bd06dbb60db9ef56db0d694505330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da545104f48277ab3ca265ab645fc7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629507dcfdeb6866da428c4f45e2b21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b304cfcd3faede935deb64864165e812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(5)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3da84f1228dee4da94e4dac7066433f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041cfbac5724abb638be27f10101e992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知
,
,且
的最大值为m.
(1)求实数m的值;
(2)若
,关于x的不等式
恒成立,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493dbbbcf8aecaf1b586774ad7846f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
(1)求实数m的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f92ba36e4c7abb1884643bc638d7cd6.png)
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适中
(0.65)
【推荐3】已知二次函数
.
(1)若
的解集为
,求函数
的单调递减区间;
(2)已知
,
,若
对于一切实数x恒成立,并且存在
,使得
成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731a60bd452d3df26022ff906092946f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069390dd908ff203327958117a226593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/017e6e26ce02c89166e87a2a7c9399e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2adf751c67f525b5738c44b4cf02d4a0.png)
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名校
【推荐1】(1)关于x的不等式
的解集非空,求实数a的取值范围;
(2)已知
,求函数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e4c7b640e120953e021c4b1d02c56f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3697ec54c1e6516bb71f5b2431d1870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcb6ea431bc38718c156d3866f83bf1.png)
您最近一年使用:0次
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适中
(0.65)
名校
解题方法
【推荐2】(1)若关于
的不等式
在
上有解,求实数
的取值范围;
(2)若
不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b703d1da5065e4b93a8d5879f72d412b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c82644f77c5455ceb7f94950e94273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a9f8c14bb1ea792fed48e4d3d9b2ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc811f214359125d6cb7ca0fc7471be.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
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适中
(0.65)
【推荐3】已知命题p:方程
无解,命题
恒成立.若命题p和q均为假命题,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40113d9817a72d8bead6851df8836e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb4f7e848791666fd902663c52ee183.png)
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