1 . 如图,一个水平放置的平面图形的直观图是个底角为
的等腰梯形,已知直观图
中,
,
,则该平面图形的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fff1dd4920f99effb1d47fdfa24a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a3ea810b5bc59148de8f21a09ab105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550add49b9d893c04c5f1660620488e5.png)
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2 . 在
中,已知
,
,
,则
的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/784d4027e4a05d3e1988aeccadd28133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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3 . 直径为2的球的体积是________ .
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解题方法
4 . 已知向量
,
,若
,实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a820047334d2482e3521f8b33a8b002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5ac3fbe4f90d7f7581b8580a5d9dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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名校
5 . 由数学王子高斯证明出的代数基本定理的内容可知一元
次多项式方程有
个复数根,且对于一元二次方程,其两个复数根互为共轭复数.若复数
是一元二次方程
的一个根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302375a5ef2aa395a5cc2583627f68d9.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74bbede2e9357ab9a2b5a3d05ddf9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0342195c134d540f32c6e192465636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302375a5ef2aa395a5cc2583627f68d9.png)
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解题方法
6 . 已知正数
满足
,则当
取得最小值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9615fb005e74640174d0f55e4a18476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7e12253044b5abff2a56dcd730ced8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
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7 . 已知
的内角A,B,C所对的边分别为a,b,c,且
,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e763348ce457e931648f62ee070405a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-06-16更新
|
335次组卷
|
3卷引用:湖南省岳阳市汨罗市第一中学2023-2024学年高一下学期5月月考数学试题
名校
8 . 在复数范围内,方程
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f085c73c349e6d1263baeabbcc5f2c6.png)
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9 . 若向量
在向量
上的投影向量为
,则
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc4e2320c85265180570f50124eafe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1305dff4fc89f3e8bc75fa7c258de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec586ebcf6211fbced8efce22919efc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2024-05-07更新
|
836次组卷
|
5卷引用:湖南省邵东市第一中学2023-2024学年高一下学期第三次月考数学试题
名校
10 . 如图,在正四棱锥
中,
,
,一小虫从顶点A出发,沿该棱锥的侧面爬一圈回到点A,则小虫走过的最短路线的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9d2b5afd504eb116b412d68691a52e.png)
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