已知函数,若关于
的方程
恰有
个不同实数根,则实数
的取值范围为
23-24高三上·天津河东·期中 查看更多[3]
天津市河东区2023-2024学年高三上学期期中数学试题(已下线)黄金卷02(已下线)高二下学期期中复习填空题压轴题十五大题型专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第三册)
更新时间:2023-11-13 20:21:19
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【推荐1】形如
的函数称为“幂指型函数”,它的求导过程可概括成:取对数——两边对
求导——代入还原;例如:
,取对数
,对
求导
,代入还原
;给出下列命题:
①当
时,函数
的导函数是
;②当
时,函数
在
上单增,在
上单减;③当
时,方程
有根;④当
时,若方程
有两根,则
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其中正确的命题是___________ .
![](https://img.xkw.com/dksih/QBM/2015/8/13/1572213723824128/1572213729624064/STEM/9c83f4d6d11a43228d4c05ce5e4d12df.png?resizew=96)
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①当
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其中正确的命题是
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名校
解题方法
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在
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名校
【推荐1】下面六个命题中,其中正确的命题序号为______________ .
①函数
的最小正周期为
;
②函数
的图象关于点
对称;
③函数
的图象关于直线
对称;
④函数
,
的单调递减区间为
;
⑤将函数
向右平移
(
)个单位所得图象关于
轴对称,则
的最小正值为
;
⑥关于
的方程
的两个实根中,一个根比1大,一个根比-1小,则
的取值范围为
.
①函数
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③函数
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④函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4908e3b4e523c042732ccb7c215aac99.png)
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⑤将函数
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⑥关于
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