名校
1 . 关于函数
,下列命题中所有正确结论的序号是______ .
①其图象关于
轴对称; ②当
时,
是增函数;当
时,
是减函数;
③
的最小值是
; ④
在区间
上是增函数;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc6b6c879214d9cae6a9062339a0b59.png)
①其图象关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be86115324901b427f6a0cf3a4c8a5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47427934d2d5f1c3de9a8f648a33a811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ff22a861c53d7373715281e371c8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505c98f3e49ff5da391509d22464c114.png)
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2 . 把正整数按上小下大、左小右大的原则排成如图所示的三角形数表(每行比上一行多一个数):设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba1bbe411bc71bca016d3fd82352f9.png)
是位于这个三角形数表中从上往下数第i行、从左往右数第j个数,如
8.若
=2018,则i,j的值分别为______ ,________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba1bbe411bc71bca016d3fd82352f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9fd48dff23e59ae58d3661db2265fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1c4abe98b1bab54583424aeddc02da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba1bbe411bc71bca016d3fd82352f9.png)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095992807636992/2098217164259328/STEM/dd031fc237c348579dfc38d2b6572934.png?resizew=144)
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名校
3 . 数列
中,
,若数列
满足
,则数列
的最大项为第__________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175e92731a24a2c2b763742a8e5db61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabad0eda18463f695894cb30e3d8dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
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2018-03-18更新
|
939次组卷
|
5卷引用:福建省福州市闽侯第六中学2018届高三上学期期中考试数学(文)试题
福建省福州市闽侯第六中学2018届高三上学期期中考试数学(文)试题重庆市万州第三中学2018-2019学年高一下学期期中数学试题山西省太原市2018届高三3月模拟考试(一)数学理试题(已下线)4.2求数列的通项公式与前n项的和[理]-《备战2020年高考精选考点专项突破题集》(已下线)4.2求数列的通项公式与前n项的和[文] -《备战2020年高考精选考点专项突破题集》
4 . 已知
是定义在R上的偶函数,其导函数
,若
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd427c13f9096c86e8df34aabc376f7.png)
,
,则不等式
的解集为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61592b954c0f4f4a44af6c792d4b7dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f99db07c90ccf081fd216873ade2af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd427c13f9096c86e8df34aabc376f7.png)
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe059e76578c5d2c24dbd1b8c9001c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc5bf8a9f55bbfbe699fa852fca2571.png)
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5 .
中,内角
,
,
所对的边分别为
,
,
,已知
,且
,则
面积的最大值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e1e2e1c0833d2bf54853358f70d182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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2017-11-24更新
|
1045次组卷
|
2卷引用:福建省福州市闽侯第六中学2017-2018学年高二上学期期中考试数学(文)试题
6 . 已知函数
,若曲线
在点
,(
,其中
互不相等)处的切线互相平行,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300c3d15b5a2ee39b1e89e5c5e65ea9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9554552f861eb901075f352b2908cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79059a3366ed1b339ba1317ce8a1e7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-11-23更新
|
811次组卷
|
3卷引用:福建省福州市闽侯第六中学2018届高三上学期期中考试数学(文)试题
名校
7 . 如果存在函数
(
为常数),使得对函数
定义域内任意
都有
成立,那么称
为函数
的一个“线性覆盖函数”.给出如下四个结论:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634952be20c76e0701e80675318830fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
①函数存在“线性覆盖函数”;
②对于给定的函数,其“线性覆盖函数”可能不存在,也可能有无数个;
③为函数
的一个“线性覆盖函数”;
④若为函数
的一个“线性覆盖函数”,则
其中所有正确结论的序号是
您最近一年使用:0次
2017-11-22更新
|
1031次组卷
|
3卷引用:福建省福州市八县一中(福清一中,长乐一中等)2017-2018学年高一上学期期中考试数学试题
名校
8 . 下列说法正确的是___________ .
①任意
,都有
; ②函数
有三个零点;
③
的最大值为
; ④函数
为偶函数;
⑤不等式
在
上恒成立, 则实数
的取值范围为
.
①任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf7a904df8f22e3f1e26a4116eb7913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c298e3b72856ab70082079d5105e8873.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2e1bb3e70e20280047d9b6c546dd16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf455b19f40ba68e85309ce90ba01c3b.png)
⑤不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d96999b31b978bbd07cc6be7a50f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7020a6b646f85f77b4c58b3814b3426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbfd40765e7c214147d889bb35368d1.png)
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2017-11-21更新
|
1875次组卷
|
2卷引用:福建省福州市八县(市)协作校2017-2018学年高一上学期期中联考数学试题
9 . 已知正项等比数列{an}满足log2a1+log2a2+…+log2a2 009=2 009,则log2(a1+a2 009)的最小值为_________ .
您最近一年使用:0次
真题
名校
10 . 观察下列等式:
;
;
;
;
;
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee7bb49247387a9028602315729f8d7.png)
.
可以推测,当
(
)时,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a406656fd46b9dca6c8e665c1aaa8e9c.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171436bb456a632766f681a4ccb11c38.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435de478370ef09b6adcf49911f759f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc80ef9d11a8ec42184379a62b306a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acbe9e01ad6f9b6bec3b9f80cdd425b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cca9f1f9b0e0d21507e94ff2d09eebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa83ef0989fe7e4d4ec9c0ec4f291b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14026f7ea59c03e4a62c5cd0c250e69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee7bb49247387a9028602315729f8d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e5ebf7656f7a18ec6c819233a1f597.png)
可以推测,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c972cbd63decec197aec1bdc306de67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19248c4252fabfaf0d55c96985d79989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a193f04226baa51605ca3de04c35c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbc26ac67a6776a65268aeadce3778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a406656fd46b9dca6c8e665c1aaa8e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171436bb456a632766f681a4ccb11c38.png)
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2017-07-24更新
|
425次组卷
|
2卷引用:福建省师范大学附属中学2016-2017学年高二下学期期中考试数学理试题