名校
1 . 已知
,若
,则
所有可能的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21493f5f90ecae141aca4e6d8fdffb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9167964325bb3cde80320358e3198aea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.-1 | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
2024-02-05更新
|
425次组卷
|
7卷引用:湖北省黄冈大光华高级中学2023-2024学年高一下学期第二次半月考数学试卷
解题方法
2 . 已知函数
的定义域为
,则函数
的定义域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d61e56483c27507feaa52131f3698b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b60927ca34b048bc64db92ca6f8f2e9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 中国的5G技术领先世界,5G技术的数学原理之一便是著名的香农公式:
.它表示在受噪音干扰的信道中,最大信息传递速度C取决于信道带宽W,信道内信号的平均功率S,信道内部的高斯噪声功率N的大小,其中
叫作信噪比.当信噪比比较大时,公式中真数里面的1可以忽略不计.按照香农公式,若带宽W不变,信噪比
从1000提升到12000,则C比原来大约增加了( ).(附:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23339aa803d6c662c94caddccbeb8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c91fa27331e9958df48fd5633432e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c91fa27331e9958df48fd5633432e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87dec116ad1fb8b33faeca6341d8bd27.png)
A.32% | B.43% | C.36% | D.68% |
您最近一年使用:0次
2024-01-09更新
|
482次组卷
|
2卷引用:湖北省咸宁市崇阳县第二高级中学2023-2024学年高一上学期数学模拟考试试题(一)
4 . 已知函数
,若方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
有三个不同的零点
,
,
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444f7f1f30e332b41c0aa3af87d46fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8d1a34435611f6a59eac3dbfeb6e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
A.实数![]() ![]() | B.函数![]() ![]() |
C.![]() ![]() | D.函数![]() |
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解题方法
5 . 设函数
,
,
,则
,
,
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f3a713c6b1d2397ad8e3e2b9bfe224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a124d55605e1743c7ed6c5ad56d9c34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89b8ba5fce64bc2cc22a97a45dc064d.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)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知定义在
上的函数
满足
,当
时,
,则
( )
![](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/ce3f16fefb7ef447ded0699c88d9613c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4921923069c4f38a0af1ff8637e35b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3fab10a5e0e5523302a8ee5dd15c37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa6beeb866d5194389848803b311d29.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知函数
,且
的图象关于
轴对称.
(1)求证:
在区间
上是单调递增函数;
(2)求函数
的最值,并计算相应的
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cc16cfa270c274ea5ce92cd9413e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209c8ec11cab5361185e5e51e5e69be6.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba560562672417ff09b1ff176c4ec988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解题方法
8 . 已知函数
是定义在
上的奇函数,对任意实数
,恒有
成立,且
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb7af9e416682c9be1ff154ec3fbfdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d98d2b51341e4229bb49b97c51a40.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d98d2b51341e4229bb49b97c51a40.png)
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10 . 对任意的
,
表示不超过x的最大整数,十八世纪,
被“数学王子”高斯采用,因此得名高斯函数,人们更习惯称之为“取整函数”,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](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/d6c825ca17bba0b0e194bb2d1b40c384.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次