解题方法
1 . 已知正项等比数列
的公比为2,若
,则
的最小值等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efedefcd76038d8192051894503e85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768f39aec3702caae34591cf637a7b00.png)
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2 . 如图,小林同学为了测量某江南某名楼的高度,他站在
处仰望楼顶
,仰角为
,走到点
处仰望楼顶
,仰角为
. 眼睛
、
离同一水平地面
的高度为1.6米,
米,则楼顶
离地面的高度
约是_________________ 米(
取1.732,
取
,按四舍五入法将结果精确到
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe8dc472dade6cea6943164792ab532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8065456efeb595b1ee723ed03029e0ec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/d11cfa66-21ab-434f-aae7-c5e2c91ada6f.png?resizew=165)
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3 . 已知某种商品在第
天的销售价格为
元,销售量为
件,则在这15天中,第___________ 天该商品日销售额最多,为___________ 元.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930f9d105491a681e876dd799cf9f2c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3291f21f1a0d77bc98cb36b17b7630f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d8891704e5164e043eee7096a9c780.png)
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2024-02-17更新
|
65次组卷
|
2卷引用:1号卷·A10联盟2022-2023学年(2022级)高一上学期11月期中联考数学(人教A版)
4 . 已知下列命题
①函数
的定义域为
;
②函数
与
的图象关于直线
对称;
③若函数
是
上的单调递增函数,则
;
④函数
(其中
)的一部分图象如图所示,则
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/e79ff785-e44c-4268-9fb7-f94255ccb995.png?resizew=111)
其中正确命题的序号为__________ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb49d7bae35f02e4a2ede5c14ed1e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac767ee208266e9340d903f82517e98.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b161347f6a2fcfd9bf0acf1e8a03fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808bd2fc4b344e7669fca65b4fa122df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ad61cb3ec8b1e57179f3feb625c7c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1b5a8d36a2c51143d30ec71ecfc442.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884a566e78bf6a47d901871960c1d000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14fd82a003d2169031a410c5aa7cce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b9b50493db5bace567ec6bda1924cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/e79ff785-e44c-4268-9fb7-f94255ccb995.png?resizew=111)
其中正确命题的序号为
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名校
5 . 计算
①
的相反数是_____________________ ;
②
的结果是_________ ;
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282b987bcf6c34a4d8c1df9f600080.png)
_________________ ;
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941267294134e60233309ce908e220a9.png)
_____________________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30d314a642667fef559032264647366.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f914d0afeb689fad2f01f7a836bc4bf.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282b987bcf6c34a4d8c1df9f600080.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941267294134e60233309ce908e220a9.png)
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6 . 定义
为函数
的特征数,下面给出特征数为
的函数的一些结论:①当
时,函数图象的顶点坐标是
;②当
时,函数图象截
轴所得的线段长度大于
;③当
时,函数在
时,
随
的增大而减小;④当
时,函数图象必经过两定点. 其中正确的结论有_________________ (填写序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5c14d63e6ef994ff6a802cb4426050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f2638d71e5d00c241c6704b32094d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3342e3a1be36dcb603f7f55df55a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeae3d0886ea80770248bf577737c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c740339cbf0250d3ced8e2ea7bcb9c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8aa5c24766744e194574d31ca534c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7349847272c8628ff6e91dea33528d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477fc7759dc2d0ac58a73ba125d8bc7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcba35b945865f4c52987ed739396acc.png)
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7 . 若一个直角三角形中两条直角边都是整数,且周长是面积的整数倍,则称其为“
三角形”,则这样的“
三角形”共有______ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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8 . 如图,
是横坐标为2的定点,点
在直线
上运动,
,
,当点
从原点
运动到横坐标为2的点
时,点
的运动距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1d8d5cea065075fe50706abe3ae802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b92a937da50218ce1b0f6b26c03a117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15b82151bff7cc0238d2034a6129f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/f5f510c1-9c5a-40b9-beaa-bdae936ab288.png?resizew=165)
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9 . 开学前,根据学校防疫要求,小芸同学连续14天进行了体温测量,结果统计如表:
这14天中,小芸体温的中位数是_________ ℃.
体温(℃) | 36.3 | 36.4 | 36.5 | 36.6 | 36.8 | 36.9 |
天数 | 2 | 3 | 3 | 4 | 1 | 1 |
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10 . 勾股定理,是几何学中一颗光彩夺目的明珠,被称为“几何学的基石”. 中国是发现和研究勾股定理最古老的国家之一. 据记载,在公元前1120年,商高答周公曰“故折矩,以为勾广三,股修四,径隅五,既方之,外半其一矩,环而共盘,得成三四五,两矩共长二十有五,是谓积矩. ”因此,勾股定理在中国又称“商高定理”. 数百年后,希腊数学家毕达哥拉斯发现并证明了这个定理,因此“勾股定理”在西方被称为“毕达哥拉斯定理”. 三国时期,吴国的数学家赵爽创制了一幅“勾股圆方图”,用数形结合的方法给出了勾股定理的详细证明. 如图所示的勾股圆方图中,四个全等的直角三角形与中间的小正方形拼成一个大正方形. 若中间小正方形面积(阴影部分)是大正方形面积一半,则直角三角形中较小的锐角
的大小为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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