解题方法
1 . 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
解题方法
2 . 设正实数
满足
,则( ) .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-01-12更新
|
608次组卷
|
2卷引用:湖北省咸宁市崇阳县第二高级中学2024-2024学年高一上学期12月份模拟考试数学试题
解题方法
3 . 下列函数不存在零点的是( ) .
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
4 . 如图,在四面体
中,
,
分别是
与
的中点,若
,
,则
与
所成的角为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/729ab88a-8410-4ce2-b9eb-0c795f843d6d.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/a301baf6cc0628366e6661a87a2d93ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79982e865f2436988d3bf2d1fb15c4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/729ab88a-8410-4ce2-b9eb-0c795f843d6d.png?resizew=156)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 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
|
481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)
6 . 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![]() |
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
8 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d98d2b51341e4229bb49b97c51a40.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d98d2b51341e4229bb49b97c51a40.png)
您最近一年使用:0次
9 . 已知函数
的值域为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a8ef32ee9f9ffb0c88d9c790477138.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25796d2d3b4aeee7b77a4b093b87f33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6067ed939a41fc1779011fdc140cea34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fa745b849849bc7b7d1af77acc1871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a8ef32ee9f9ffb0c88d9c790477138.png)
您最近一年使用:0次
10 . 已知某扇形的半径为2,圆心角为
,则扇形的面积是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
您最近一年使用:0次