12-13高三上·吉林·期末
1 . 已知数列
的前
项和
,且
.
(1)求数列
的通项公式;
(2)已知定理:“若函数
在区间
上是凹函数,
,且
存在,则有
”.若且函数
在
上是凹函数,试判断
与
的大小;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca409be386d331e96ee1bf9e387f7b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340e5f81421c5214622a42a1f6ae1003.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知定理:“若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e122d4233c67cc9d8ce76e38404f582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a1ae60bd9a4901070ad5aed0766a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1bdde2f1e8604196cb7dc8a1acd944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95931effbd59c43e8ed1ea09962b84f.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f469527f0a1faf217882d0d060b3e7.png)
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名校
2 .
的展开式中,常数项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2b8d9781f22fdff1f96943fa6e4693.png)
A.![]() | B.![]() | C.15 | D.20 |
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2020-12-27更新
|
178次组卷
|
2卷引用:吉林省长春市第二实验中学2020-2021学年高三上学期期中考试数学(理)试题
名校
3 . 设n=
dx,则二项式
展开式中常数项为 ________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c6d55b6faccb29280933e486ce9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e8c444c82addb351f094e3007a1d4f.png)
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2018-01-12更新
|
468次组卷
|
4卷引用:吉林省辽源市田家炳高级中学等五校2018届高三上学期期末联数学(理)试题
4 . (1)若
展开式中的常数项为60,求展开式中除常数项外其余各项系数之和;
(2)已知二项式
(
是虚数单位,
)的展开的展开式中有四项的系数为实数,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dc219700efaf60f1ba14d82d96802e.png)
(2)已知二项式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f224115d1b7683339c0404ff2426d65d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8799c7c55db1ac0ea222281b4183b5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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5 . 已知集合
,集合P的所有非空子集依次记为:
,设
分别是上述每一个子集内元素的乘积,(如果P的子集中只有一个元素,规定其积等于该元素本身),那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf608e45a09dd011f060db476f3a288b.png)
___________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f90e96c84a487286f2725e7b5208c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2686b0e77f8f0d2ca8d1c7d5784f045b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0fcce068c814366e93f2d4fe94010d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf608e45a09dd011f060db476f3a288b.png)
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2016-12-04更新
|
464次组卷
|
3卷引用:2016届吉林省东北师大附中高三三校联考理科数学试卷
名校
6 . 若
满足
,当
取最大值时,二项式
的展开式中常数项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c85ad1556d9661ab47ba8af32e11b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62cf6431f58b2732437662cb473c514a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486bc71ee79ef0a59aab4bceac0a89fb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 关于二项式
有下列命题:①该二项展开式中非常数项的系数和是1; ②该二项展开式中第六项为
;③该二项展开式中系数最大的项是第1006项;④当
时,
除以2012的余数是2011.其中正确命题的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a257974d0b5b94cc49a85f93cc7de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d51ca47224a121986fa0395086e3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fc86885e23aaf73c52a9b8ad774de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a257974d0b5b94cc49a85f93cc7de7.png)
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8 .
的展开式中的常数项是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305d8223b86db321a34300a3c16029c7.png)
A.![]() | B.![]() | C.140 | D.![]() |
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