名校
1 . 设函数
的定义域为
,若函数
满足条件:存在
,使
在
上的值域是
,则
称为“倍缩函数”,若函数
为“倍缩函数”,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ee87e42cc88a4fdf1d21bf61781224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887f6a9979510535228f6167f152d06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec480307e1b2f8c14086af6b9bf2cca9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e46bff1ba235329ed6ae1321e33f3b5.png)
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2020-03-19更新
|
1841次组卷
|
6卷引用:浙江省杭州学军中学西溪校区2020-2021学年高一下学期3月计算大赛数学试题
名校
2 . 正方形
和
内接于同一个直角三角形ABC中,如图所示,设
,若两正方形面积分别为
=441,
=440,则
=______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd465973943bcd766b5275ee204bbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/2f814075-39ad-4e8f-97c3-f33d5a265dcf.png?resizew=324)
您最近一年使用:0次
2019-09-14更新
|
413次组卷
|
3卷引用:浙江省杭州学军中学西溪校区2020-2021学年高一下学期3月计算大赛数学试题
浙江省杭州学军中学西溪校区2020-2021学年高一下学期3月计算大赛数学试题广东省中山市2018-2019学年高一下学期期末考试数学试题(已下线)专题5.7 三角函数的应用-《讲亮点》2021-2022学年高一数学新教材同步配套讲练(人教A版2019必修第一册)
3 . 将正整数
,
,
,
,
按第
组含
个数分组:
,
,
,
.那么
在第__________ 组.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b00f4eb7f1bd2ccefbabf0c1dfa8f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ad4e6999c446cc6820c88f497fe0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0afb5dbad5761918b8dec43aeef137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da9bb50f083413e0d45451e9d2d7293.png)
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4 . 已知两个边长为
的正三角形
与
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/6a89a8f1-c5cd-4406-9093-0b1107198640.png?resizew=154)
(
)当
的距离为多少时,三棱锥
的体积最大?
(
)求三棱锥
的体积最大时的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/6a89a8f1-c5cd-4406-9093-0b1107198640.png?resizew=154)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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名校
5 . 设
,
是正整数,满足
.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b1b5e71aaf8a19aca95ee74a1c59d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa7bbc7b8dd60e3abc0f62b9913fb57.png)
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名校
解题方法
6 . 棱长均为
的三棱锥,其一个面水平放置,则它的侧视图的面积的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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名校
解题方法
7 . 设函数
当
时单调递增,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb61f71e825f97ab9f6bab5ecc7be431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-02-28更新
|
562次组卷
|
2卷引用:浙江省杭州市学军中学2016-2017学年高一上学期12月竞赛测试(二)数学试题
名校
8 . 数列
,
,
,
,中的最小项的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10980f8ec75a729b99a0def4a5df02ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
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名校
解题方法
9 . 已知锐角
,
满足条件:
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6337b8bc0ebf65c56369c59599330c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
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名校
解题方法
10 . 如图
,直角梯形
,
,将
沿
折起来,使平面
平面
.如图
,设
为
的中点,
,
的中点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/5724be25-5478-45c0-87f3-a77dc61d8262.png?resizew=418)
(
)求证:
平面
.
(
)求平面
与平面
所成锐二面角的余弦值.
(
)在线段
上是否存在点
,使得
平面
,若存在确定点
的位置,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a717c411ecb25464d817d7c2e807164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4cb0b82547733eef4343354bb7c791.png)
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(
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(
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(
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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