已知数列
满足:
,
.则下列说法正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1381f0937c6052ce088e0eaee7df4880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7df5ae3993264f69d6cf3ae02411064.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
2020·河北石家庄·模拟预测 查看更多[2]
更新时间:2020-06-22 23:20:50
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相似题推荐
单选题
|
较难
(0.4)
【推荐1】若定义域为
的函数
的导函数为
,并且满足
,则下列正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14fc7eef5ed3140912ead40a4ab4e83.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】设定义在实数集
上的函数
与
的导数分别为
与
,若
,
,且
为奇函数,则下列说法不正确 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6cbd64291fa53ffec2592a50559e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c59efaca2fa9cc675c3e1dd9d4d7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6d578f9c98ce402d4cf6e4a23281c5.png)
A.![]() | B.![]() ![]() |
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您最近一年使用:0次
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【推荐1】设函数
的极值点从小到大依次为
,若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c728e1cb236050859914e7053347736.png)
,则下列命题中正确的个数有( )
①数列
为单调递增数列
②数列
为单调递减数列
③存在常数
,使得对任意正实数
,总存在
,当
时,恒有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03809f185f08f8156f8ead72e534c91.png)
④存在常数
,使得对任意正实数
,总存在
,当
时,恒有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488d3950638822de3602a1a48a1dd225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18679c9696d863829e3d2814b4b6752f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888c57f76a250a05e64d57f89a90ae63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d3db5570a5ab31ff7468c0d64d0f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c728e1cb236050859914e7053347736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3247e66546907b0beb0d5946ae2acaa0.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
③存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a476b12fcc95f885197ec48c45cfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591c10d6af25780ba5bfcd82f2cb366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03809f185f08f8156f8ead72e534c91.png)
④存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cefeddff52b02a43831beeb4bb6faa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a476b12fcc95f885197ec48c45cfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591c10d6af25780ba5bfcd82f2cb366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488d3950638822de3602a1a48a1dd225.png)
A.4个 | B.3个 | C.2个 | D.1个 |
您最近一年使用:0次
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【推荐2】对数列
,若区间
满足下列条件:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5369040616976eca262667e23317305b.png)
;②
,
则称
为区间套.下列选项中,可以构成区间套的数列是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcba920904a03e3f950e962cc8c7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3178f1059543900c1fafdc478d7fe0e6.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5369040616976eca262667e23317305b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2787262f566d637c93f2f07891b65b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580517ce717252955f56eec417b663e0.png)
则称
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8585e9c5843bdc9a2aec7416068d0de.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】已知数列
满足
,
,若
,对任意的
,
恒成立,则
的最小值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed341344965530b2b162a3b830da8cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49868a53017a9f3a2d91aec69af16d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef124353a6e8f7a699086e5fd8e329.png)
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A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
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解题方法
【推荐2】已知数列
满足
,
,
,(π≈3.14)则此数列项数最多为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0862a31298d6b66de73ab3b60d645cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd6b22c36fc8700c2b58519c6629c68.png)
A.2019项 | B.2020项 |
C.2021项 | D.2022项 |
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