曲线
在点
,
处的切线分别与y轴交于点
,
.若c,
,d成等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b9afe6e2307c6a8b0097a6c45b227c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef0106bb3ce17e344936f77a6b7eb88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc3a0cacfbe43771f3b89e4bec4d7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541130d07517bebaee5f5577fe167023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44853242539b71cc7c54ef06c3a713fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d90ab6e95bc1e1b06fd5aa3b7d2b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b9afe6e2307c6a8b0097a6c45b227c.png)
更新时间:2024-05-23 10:41:44
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【推荐1】对于函数
(其中
):①若函数
的一个对称中心到与它最近一条对称轴的距离为
,则
;②若函数
在
上单调递增,则
的范围为
;③若
,则
在点
处的切线方程为
;④若
,
,则
的最小值为
;⑤若
,则函数
的图象向右平移
个单位可以得到函数
的图象.其中正确命题的序号有_______ .(把你认为正确的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafa2b1479cacf9afaa1e0e033d93041.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a467ddaa138590b3b56615c2c42a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f597be2a41ebd5a69ad281b1f93fa463.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a467ddaa138590b3b56615c2c42a5.png)
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【推荐2】已知函数
,若曲线
与曲线
存在公切线,则实数
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3d2a7a72965411fb1691e0adf9e1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】将1,2,3,4,5,6,7,8,9这九个数填入如图所示
的正方形网格中,每个数填一次,每个小方格中填一个数,考虑每行从左到右,每列从上到下,两条对角线从上到下这8个数列,给出下列三个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/a1197d5c-e308-484e-8bd3-99217fca01ed.png?resizew=65)
①这8个数列中最多有3个等比数列;
②若中间一行、中间一列、两条对角线均为等差数列,则中心数必为5;
③若第一行、第一列均为等比数列,则其余6个数列中至多有1个等差数列.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d8fccf0cf8b55a68488fe48b78744.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/a1197d5c-e308-484e-8bd3-99217fca01ed.png?resizew=65)
①这8个数列中最多有3个等比数列;
②若中间一行、中间一列、两条对角线均为等差数列,则中心数必为5;
③若第一行、第一列均为等比数列,则其余6个数列中至多有1个等差数列.
其中所有正确结论的序号是
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【推荐2】在单调递增数列
中,已知
,且
,成等差数列,
成等比数列,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acca5aa6b2285d897a65c289c1b54ba.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5786daa387797fe28543eb25cdcf0193.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331f2cd0242737307d6ee6c46009ece8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acca5aa6b2285d897a65c289c1b54ba.png)
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