解题方法
1 . 已知函数
有两个极值点
.
(1)求
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed85e516715c0082cae32f1a09cc312e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e047b5d4de7e5e92e433a86377e7788.png)
您最近一年使用:0次
2018-05-02更新
|
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2卷引用:【校级联考】浙江省衢州市五校联盟2019届高三年级上学期联考数学试题
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2 . 已知函数
(
,
),且对任意
,都有
.
(Ⅰ)用含
的表达式表示
;
(Ⅱ)若
存在两个极值点
,
,且
,求出
的取值范围,并证明
;
(Ⅲ)在(Ⅱ)的条件下,判断
零点的个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d16eff6f9157fc0915a32cff0eeb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa63b622d7f95f24dab27f977fcb042.png)
(Ⅰ)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bc188ba95c4a4f9322e0a464bf6bef.png)
(Ⅲ)在(Ⅱ)的条件下,判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
您最近一年使用:0次
2017-05-10更新
|
1017次组卷
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4卷引用:2019届浙江省衢州市衢州二中高三下学期高考适应性考试数学试题