1 . 高斯是德国著名的数学家,近代数学的奠基者之一,享有“数学王子”的称号,用其名字命名的“高斯函数”定义为:对于任意实数x,记
表示不超过x的最大整数,则
称为“高斯函数”.例如:
,
.
(1)设
,
,求证:
是
的一个周期,且
恒成立;
(2)已知数列
的通项公式为
,设
.
①求证:
;
②求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7179c645736d68c90023f83d7f11ed01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a84bb2c73d7560f8543ee90fd3cfd87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce33c9b4713d3027ffcc1321800bfdc.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc886ed87255efa6007b3e5d1df429a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cde4038ab5a4ede107d02d41861fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f67ed1a4372f6a807c14d4c8fa3a4.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb605f0ddd311d1a092c5be5ae29260.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f275ffdb11a31a07fc8569ddda7a6a.png)
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名校
2 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b008969eee5d2990c094a88c829e18.png)
A.![]() ![]() |
B.![]() |
C.当![]() ![]() |
D.对任意![]() ![]() ![]() |
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解题方法
3 . 设定义在R上的函数
与
的导函数分别为
和
.若
,
,且
为奇函数,则下列说法中一定正确的是( )
![](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/502b41cae5a24ed956346ec841d73260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753147341f08dbb36907ea2fcbdeef0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7661d3fc28f785b438ad8c8f9d240a.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
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5卷引用:四川省南充市2023届高考适应性考试(二诊)理科数学试题
四川省南充市2023届高考适应性考试(二诊)理科数学试题陕西师范大学附属中学2022-2023学年高二下学期期末理科数学试题(已下线)专题03 函数的概念与性质-1(已下线)专题2-1 函数性质(单调性、奇偶性、中心对称、轴对称、周期性)-2(已下线)函数的图象与性质
解题方法
4 . 已知函数
及其导函数
的定义域均为R,记
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2495c66dd202153fcdad0e2a34abf50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506f057cbcc7c6ef8435e4c75a5d8138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fad9af58eaa8bde7349d49eaa73fb16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7beddcd216f5b165b49f793fe9ea990f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知奇函数
在
上有定义,且满足
,当
时,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339b85cca0100adc23472c143f9a5a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d076cb4d4b7e3be708d6af2a6ad2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9564a35aa4ee2a48d7a29c083d0bb051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ed0c146aeee99d12983646ce840452.png)
A.![]() ![]() |
B.函数![]() ![]() ![]() |
C.函数![]() ![]() |
D.方程![]() ![]() ![]() |
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解题方法
6 . 已知函数
的定义域为
,值域为
, 函数
具有下列性质:(1)若
,则
;(2)若
,则
.下列结论正确的是( )
①函数
可能是奇函数;
②函数
可能是周期函数;
③存在
,使得
;
④对任意
,都有
.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4496b6dc110a079d8164cc1fb0f933ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e2adedc216f343e2d8df4d40829d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4496b6dc110a079d8164cc1fb0f933ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e990af66705cbda7c03d41d5ab5fad5c.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b665a1329dcb5c9904dd1b3eb9c671c.png)
④对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b327deb9ee8c04433c03b92b6548c575.png)
A.①③④ | B.②③④ | C.②④ | D.②③ |
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