1 . 莫比乌斯函数在数论中有着广泛的应用.所有大于1的正整数
都可以被唯一表示为有限个质数的乘积形式:
(
为
的质因数个数,
为质数,
),例如:
,对应
.现对任意
,定义莫比乌斯函数
(1)求
;
(2)若正整数
互质,证明:
;
(3)若
且
,记
的所有真因数(除了1和
以外的因数)依次为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e046acc0e785892df1ef03a440b0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5c607987b73502db63f77c9799f4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fe943e1acfb453f41bee79119cce60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38261aad19184a74c797b6b88ffd344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cb09df4dbbe40a2b7ed54da17346dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09881de0dc186bbcd1e60eb00159ee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5872b44498c348c023828ed66e86d1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b2c4263428e2ee419589171f27e23f.png)
(2)若正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201e0fbcfb6833c4b1917cfed3096b6f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4a887eaea7f0aac8505ed3b3c0c678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4811e3603e8790c25aaf91c41d7c7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202a57af91d5be04e95fcbdb8f2b788f.png)
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5卷引用:【人教A版(2019)】高二下学期期末模拟测试A卷
(已下线)【人教A版(2019)】高二下学期期末模拟测试A卷河南省南阳市西峡县第一高级中学2023-2024学年高二下学期第一次月考数学试卷重庆市乌江新高考协作体2023-2024学年高二下学期第一阶段学业质量联合调研抽测(4月)数学试题湖南省衡阳市2024届高三第二次联考数学试题(已下线)压轴题08计数原理、二项式定理、概率统计压轴题6题型汇总
解题方法
2 . 过抛物线
上一点
作两条相互垂直的直线,与E的另外两个交点分别为A,B,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0782718dd8b2e591ef21fc89d1af2fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe3f68cbbcc907caab5083d08df301.png)
A.E的准线方程为![]() |
B.过点M与E相切的直线方程为![]() |
C.直线AB过定点![]() |
D.![]() ![]() |
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3 . 已知
与
均为完全平方数,且
的正整数
共有 ( )个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2def5aa62f497709e1bd8258583d62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e19f7bfb0ee59fc93e6e822a0658af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3ae6568fc643dc326fb176ec6b510b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.1 | B.12 |
C.13 | D.以上都不对 |
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2024高三上·全国·专题练习
名校
解题方法
4 . 已知
,
,
(1)若
在
处取得极值,试求
的值和
的单调增区间;
(2)如图所示,若函数
的图象在
连续光滑,试猜想拉格朗日中值定理:即一定存在
,使得
,利用这条性质证明:函数
图象上任意两点的连线斜率不小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c566b6273b93a7231f891a0889579227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d60df31661ec394cdec5f0ad6bac38.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0843a602fe240e5798bcbc7d54b19ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)如图所示,若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7fc0ca8a82663b87fa36afb9c4ec09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3fcc5073759c73c7a63c8818eca5c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a947d16d7293baf95e9274b9a0f5db78.png)
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5 . 将20个无任何区别的小球放入编号为1,2,3的三个盒子中,要求每个盒子内的小球个数不小于它的编号数,则不同的放法有( )
A.90种 | B.120种 | C.160种 | D.190种 |
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2024-01-10更新
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788次组卷
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6卷引用:辽宁省沈阳市重点学校联合体2023-2024学年高二上学期期末检测数学试题
辽宁省沈阳市重点学校联合体2023-2024学年高二上学期期末检测数学试题(已下线)专题2.5排列组合综合(强化训练)-2023-2024学年高二数学下学期重难点突破及混淆易错规避(人教A版2019)(已下线)6.2.3&6.2.4 组合、组合数(8大题型)精讲-2023-2024学年高二数学题型分类归纳讲与练(人教A版2019选择性必修第三册)(已下线)模块五 专题2 全真基础模拟2(已下线)专题03 计数原理与排列组合--高二期末考点大串讲(苏教版2019选择性必修第二册)(已下线)专题8-1排列组合归类-1
解题方法
6 . 若复数z满足
,则复数z的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa80a1e4a2f9f20817b79ce184ccf76.png)
A.-I | B.![]() | C.-1 | D.1 |
您最近一年使用:0次
名校
7 . 若关于
的不等式
的解集为
,则实数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560e844ac5cf47a8618fc17257819fff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023高三·全国·专题练习
8 . 设数列
满足
,
.
(1)证明:
.
(2)设数列
的前n项和为
,证明:
.
![](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/fb2dbc4c08aa70076c1c12daeedcb298.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c31f2f5b97bc76078c101082bb76bb6.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffb575d8e0365de6ccab0d0645fc78a.png)
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9 . 椭圆
与抛物线
有公共点,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9647f94992cce4e7f317712922d92bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-05-20更新
|
470次组卷
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3卷引用:黑龙江省牡丹江第二高级中学2023-2024学年高二上学期期末数学模拟试卷
名校
解题方法
10 . 在《九章算术》中,将四个面都是直角三角形的四面体称之为鳖臑.如图所示,四面体
为鳖臑,
平面
,
,
,
,
分别是棱
和
上的动点,且
,则
的长最小为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625bca170fed3fbdc1441b3c0df4a6bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51cee4392cf5d4086b2e6c5b3b98341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/11c70744-cb6e-48fd-9f81-d553911c28c4.png?resizew=136)
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2023-02-18更新
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2卷引用:浙江省杭州第二中学2022-2023学年高二上学期期末数学试题