已知
,函数
的单调递减区间
,区间
.
(1)求
和
的值;
(2)“
”是“
”的充分条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd793b701e706a096463b751775105a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4329af0570e78b81e930074029ee60b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8381052ba6db8323837b1db33549be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4722ef17ea55b5c79d7ab49086ab87bd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-01-28 20:25:30
|
相似题推荐
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知集合
,集合
.
(1)是否存在实数
,使
是
的充分条件?若存在,求出
的取值集合;若不存在,请说明理由;
(2)是否存在非负实数
,使
是
的必要条件?若存在,求出
的取值集合;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a59efe8739c17ed39fc3e668add6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec10bd77a8660c75bd08536a79a99e6b.png)
(1)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)是否存在非负实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】(1)是否存在实数
,使得“
”是“
或
”的充分条件?
(2)是否存在实数
,使得“
”是“
或
”的必要条件?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4badde0d82e50a9645b06e9152170fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e1512c67e2f7696e7558b43b954641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e9029d132adff5937610349c883287.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4badde0d82e50a9645b06e9152170fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeb69dcd17cd8448b0ed90fc02a7f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16688590aa75a979cc269d934f1bf899.png)
您最近一年使用:0次
解答题-问答题
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较易
(0.85)
解题方法
【推荐1】已知函数
.
(1)当
时,求函数
的单调区间和极值;
(2)若函数
在区间
上单调递增,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5264f157b95c8eeafc7ad64e00717ea.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ec6f6d94c6da340449e85df91c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知函数
在
处取得极值.
(1)确定
的值;
(2)若
,求函数
的单调减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb9c936fe6db3747417a441ff1998cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b5aa612146904d7f1c801e51773fb1.png)
(1)确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd849afaadb49b04aa26caf30e705d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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