1 . 已知
中,
,
,
,则
在
方向上的数量投影为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0dbe0dc30f7be260e24acb67f89abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
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2 . 已知扇形的弧长是
,面积是
,则扇形的圆心角的弧度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9202af84bc055b58bd51fae5e3272283.png)
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解题方法
3 . 若函数
的定义域为
,值域为
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c65d71e57e6e7697e2f627dcd58583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d13d0b65cccde33e57652fc87471c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
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解题方法
4 . 如果两个复数的实部互为相反数,虚部相等,那么这两个复数互为“共胚复数”.已知
与
互为“共胚复数”,其中
,
,
为虚数单位,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8acd519003e30c20b97fdb432c27530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa08d3f20a0199077bacb1bbf680473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726c078ca626f64e0d02c2666d8af105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.0 | C.3 | D.![]() |
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解题方法
5 . 设
为虚数单位,若复数
满足
,则
在复平面内对应的点在( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e17abfb38f282d694254d15be48a914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
您最近一年使用:0次
昨日更新
|
228次组卷
|
3卷引用:江苏省南京市东山高级中学南站校区2023-2024学年高一下学期期末考试数学试卷
6 . 将函数
的图象向左平移
个单位长度,然后把曲线上各点横坐标变为原来的
(纵坐标不变)得到函数
的图象.
(1)求函数
的解析式;
(2)若
,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf521f6437c76c847872f1047664aa4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af17cc007e36db26c47a96d9c7a41757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
您最近一年使用:0次
名校
解题方法
7 . 对正实数
,若定义在
上的函数
满足:对任意的实数
,都有
,则称
是“
增函数”. 现给出如下两个命题:命题甲:若对一切正有理数
,函数
均为“
增函数”,则
是
上的增函数,命题乙:若对一切正无理数
,函数
均为“
增函数”,则
是
上的增函数,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4317d70f0927bad41f61019c9e2e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
A.甲是真命题,乙是假命题 | B.甲是真命题,乙是真命题 |
C.甲是假命题,乙是假命题 | D.甲是假命题,乙是真命题 |
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解题方法
8 . 下列命题为真命题的有( )个.
①若随机变量
的方差为
,则
;
②对于随机事件A与B,若
,则事件A与B独立;
③相关系数
越大,两组数据的相关程度越强.
①若随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613d10c79435956258de35aa491d54e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f57433e3554241b1600b26bebdb8cf6.png)
②对于随机事件A与B,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4926c299760d344ebbae4b4c770d6504.png)
③相关系数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
A.0 | B.1 | C.2 | D.3 |
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9 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54de2455dfd7028974f0b9254f9299a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d0a7fab64bbd0b5c7b74b5d15157bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
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名校
10 . 方程
的解集为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8536a585142d325936f96683edc5b5.png)
您最近一年使用:0次