解题方法
1 . 设向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb11592a8871819f9045d311d420342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b22a1ed003a21a35e379d9c815745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668f0254cf71230731ceb71bfc0e07a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.0 | C.6 | D.![]() |
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2 . 如图,在三棱柱
中,D,E分别是线段
,
的中点,设
,
,
.用
,
,
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658ff9921ff96972b0fc95360bb0c65b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0879a90fdf1c8be67eccfff8fe2c4cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9206f052cc7298fdf9049f9386f53928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df107a0db8e7084e46cbf0edc9dd4878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658ff9921ff96972b0fc95360bb0c65b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/6d5f40ae-63d4-44bf-8303-0e9a5045899f.png?resizew=151)
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名校
3 .
是虚数单位,复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3fc19701414f607a543fb81d267ea6.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3fc19701414f607a543fb81d267ea6.png)
您最近一年使用:0次
2024-01-25更新
|
1130次组卷
|
4卷引用:天津市宁河区2024届高三上学期期末数学试题
4 . 设全集
,集合
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50e12498822fdc313e9a8c9e474a6f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4624ecf0cb5dead03e83414f078c025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eda1da6372c69ab4ec5046ec2d9ea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
5 . 为了得到函数
的图象,只需把函数
的图象上所有的点的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f140f4bfe8274952ea643fe7b8921bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571d52e1321b596a99c87cbd38e316b0.png)
A.横坐标伸长到原来的2倍,纵坐标不变 |
B.横坐标缩短到原来的![]() |
C.纵坐标伸长到原来的2倍,横坐标不变 |
D.纵坐标缩短到原来的![]() |
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2024-01-24更新
|
1782次组卷
|
7卷引用:天津市宁河区2023-2024学年高一上学期期末考试数学试题
天津市宁河区2023-2024学年高一上学期期末考试数学试题湖南省衡阳市第八中学2024届高三上学期第一次模拟测试数学试题(已下线)考点7 函数y=Asin(ωx+φ)的图象、性质 --2024届高考数学考点总动员【练】(已下线)热点3-2 三角函数的图象与性质(10题型+满分技巧+限时检测)-1(已下线)1.6 函数y=Asin (ωx+φ)的性质与图象-数学同步精品课堂(北师大版2019必修第二册)(已下线)1.6 函数y=Asin (ωx+φ)的性质与图象4种常见考法归类(2)-【帮课堂】(北师大版2019必修第二册)湖北省天门市江汉学校2023-2024学年高一下学期3月月考数学试题
6 . 从4名女生、6名男生中,按性别采用分层抽样的方法抽取5名学生组成课外小组,则不同的抽取方法种数为( )
A.1440 | B.120 | C.60 | D.24 |
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2024-01-24更新
|
990次组卷
|
2卷引用:天津市部分区2024届高三上学期期末练习数学试题
7 . 直线
的倾斜角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1dd81b78c56a88b10791775d5b8c8a.png)
A.30° | B.60° | C.120° | D.150° |
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8 . 数列
的前n项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4555dca34cc0ad25f9648d19bcbb69da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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9 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f40533b7cad7ddd946044511d76d31.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f33e7e7b0f82f10f5fb983adfe22f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f40533b7cad7ddd946044511d76d31.png)
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10 . 已知集合
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa4f59a3fd052f229e79e5aefa517913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e8d171c3d2d86dc5594cffb51096fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e18306ebf275f54eb946ddb7c38397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0841f80548d3d30239a6820467f6be96.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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