直线
过函数
图象的对称中心,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d473707f01512369d6566bab0103149d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b2c4aeb4675c5e6c3b366229e53f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4741556c029b5811318746d837cf246.png)
A.9 | B.8 | C.6 | D.5 |
更新时间:2024-06-11 23:24:14
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【推荐1】已知函数
在
上可导,其导函数为
,若
满足:
,
,则不等式
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】已知函数
是定义在
上的偶函数,且
,当
时,
,设函数
,则函数
的零点个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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A.6 | B.8 | C.12 | D.14 |
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【推荐1】已知数列
是等差数列,且
.若
是
和
的等差中项,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e987756fedea2408cd8c8a0672c3f50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f59efcae5a5bb6c6a138a583b1db03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed97b1825acfdd463edcd7792ba52b2.png)
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【推荐2】已知等差数列
的等差
,且
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,
为数列
的前
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的最小值为
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A.3 | B.4 | C.![]() | D.![]() |
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【推荐1】已知各项都为正数的等比数列
满足
,存在两项
,
使得
,则
的最小值为( )
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【推荐2】十六世纪中叶,英国数学家雷科德在《砺智石》一书中首先把“
”作为等号使用,后来英国数学家哈利奥特首次使用“
”和“
”符号,并逐步被数学界接受,不等号的引入对不等式的发展影响深远.若实数
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的最小值为( )
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【推荐3】已知
,
是函数
的两个极值点,则
的最小值为( )
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