名校
解题方法
1 . 如图,在
中,角
所对的边分别为
,已知
,
的平分线
交边
于点
边上的高为
边上的高为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ada871ccdbd83b6ccbddbcd84521bc.png)
__________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7330af1eaa4fbb442ebc7b47be6b6d7a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0d44899ceb7b3137a82f2498c6d9b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bea1b93dcf0514f157720793da1a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383d609af37a655a531e3e7441cd123e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa9e9cc8d1a0e6846523986552693cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d287c4df5c0cac5a4931edb43b01d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ada871ccdbd83b6ccbddbcd84521bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7330af1eaa4fbb442ebc7b47be6b6d7a.png)
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2024-06-16更新
|
220次组卷
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3卷引用:河南省濮阳市2024届高三第三次模拟考试数学试题
名校
解题方法
2 . 已知四棱锥
的高为
,底面
为菱形,
,
分别为
的中点,则四面体
的体积为________ ;三棱锥
的外接球的表面积的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209377196940bffa8ffa5f55b9c59fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1443bfe022f648f813fb1e15b2d78b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669bf000351b4a5b48d7322ef8e720a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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2024-03-13更新
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1567次组卷
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7卷引用:河南省济洛平许2024届高三第三次质量检测数学试题
河南省济洛平许2024届高三第三次质量检测数学试题河南省济源、洛阳、平顶山、许昌四市联考2024届高三下学期3月第三次质量检测数学试题辽宁省2024届高三下学期3+2+1模式新高考适应性统一考试数学试卷(已下线)专题15 简单几何体的表面积与体积-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)数学(全国卷理科02)广东省广州市番禺中学2023-2024学年高一下学期期中考试数学试卷(已下线)专题21 空间图形的表面积和体积-《重难点题型·高分突破》(苏教版2019必修第二册)
名校
3 . 已知函数
没有零点,则a的一个取值为___________ ;a的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/467237e2e2cc45e45b123532288fe91d.png)
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2024-02-10更新
|
389次组卷
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3卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题
解题方法
4 . 已知
中,点
是
中点,点
满足
,记
,
,请用
,
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ce0da153621bbd05519f168b527e3e.png)
______ ;若
,向量
在向量
上的投影向量的模的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecb91d19a693299dcdad4059b6237a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8a8c17891ffbda9b616bee26d67e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8682ba80b5d1e124e98c8661c753a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ce0da153621bbd05519f168b527e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df2b42a45880320562c294c768d1a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4781e3daa2c4e018ca0ae09bb56abc0f.png)
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解题方法
5 . 拋掷两颗质地均匀的骰子,其中白色骰子与黑色骰子各一颗,记事件
为“白色骰子的点数为
或
”,事件
为“两颗骰子点数之和大于
”,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec76ffd1e94c9023c2241dbd12df8b5.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8836099afaebdb8323cc444c8314f546.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec76ffd1e94c9023c2241dbd12df8b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8836099afaebdb8323cc444c8314f546.png)
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名校
6 . 已知函数
则
的单调递增区间为___________ ;满足
的整数解的个数为___________ .(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e4d38eb89bd5bc835672807af2f776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec85fb8b2909d12407e2d21af3f28dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f4d8318aba2dd01bfdc4c6b77c6121.png)
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2024-01-17更新
|
380次组卷
|
4卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题
名校
7 . 农科院作物所为了解某种农作物的幼苗质量,分别从该农作物在甲、乙两个不同环境下培育的幼苗中各随机抽取了15株幼苗进行检测,量出它们的高度如下图(单位:
):![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc11b7e4d40794e8a2acc4ed959b3b1b.png)
___________ ;
若以样本估计总体,记甲、乙两种环境下幼苗高度的标准差分别为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9ab1621cd729a18b2173e95d557376.png)
___________
(用“<,>或=”连接).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc11b7e4d40794e8a2acc4ed959b3b1b.png)
若以样本估计总体,记甲、乙两种环境下幼苗高度的标准差分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b645549a2abd5eb88b539c01e57a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9ab1621cd729a18b2173e95d557376.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54eba004c3cf1aca04c71d3c6ac00cbe.png)
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2024-01-17更新
|
437次组卷
|
5卷引用:北京市海淀区2023-2024学年高一上学期期末考试数学试题
北京市海淀区2023-2024学年高一上学期期末考试数学试题北京市海淀区2023-2024学年高一上学期期末考试数学试题北京市中国人民大学附属中学2023-2024学年高一上学期期末数学试题(已下线)第九章 统计(单元重点综合测试)--单元速记·巧练(人教A版2019必修第二册)(已下线)第06讲 9.2.4 总体离散程度的估计-【帮课堂】(人教A版2019必修第二册)
名校
8 . 水车又称孔明车,是以水流为动力的机械装置,是我国古老的农业灌溉工具.如图,某水车的半径为4米,圆心
距离水面2米,每分钟逆时针匀速旋转5圈.当水车上点
从水中浮现时(图中点
)开始计时,已知点
距离水面的高度
(米)关于时间
(秒)的函数为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031234fed7c1e7ce28e7dd1342b01e78.png)
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a27b2182708f6c2e295d4f2bf84cb1.png)
________ ;点
第一次到达最高点大约需要________ 秒.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031234fed7c1e7ce28e7dd1342b01e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13475bcbebd8000293e134a6b9fc8411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a27b2182708f6c2e295d4f2bf84cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/59c0a76f-7172-49eb-991a-934c6e47c7a5.png?resizew=159)
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2024-01-11更新
|
461次组卷
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5卷引用:高一上学期期末考点大通关真题精选100题(2)-【题型分类归纳】(人教A版2019必修第一册)
(已下线)高一上学期期末考点大通关真题精选100题(2)-【题型分类归纳】(人教A版2019必修第一册)云南省昆明市五华区2023-2024学年高一上学期1月期末质量检测数学试题(已下线)专题05 三角函数3-2024年高一数学寒假作业单元合订本(已下线)1.8 三角函数的简单应用-同步精品课堂(北师大版2019必修第二册)江西省宜春市丰城中学2023-2024学年高一下学期第一次段考(3月)数学试题
9 . 已知数列1,1,2,1,2,4,1,2,4,8,1,2,4,8,16,…,其中第一项是20,接下来的两项是20,21,再接下来的三项是20,21,22,依此类推.
(1)这个数列的第211项为____ ;
(2)设该数列的前n项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa8528c5500f030d7e63d6a42055ef5.png)
____ .(保留幂形式)
(1)这个数列的第211项为
(2)设该数列的前n项和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa8528c5500f030d7e63d6a42055ef5.png)
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2024-01-06更新
|
478次组卷
|
4卷引用:江苏省2023-2024学年高二上学期期末迎考数学试题(R版B卷)
10 . 已知数列
满足:
;
;
,
,其中
,
.数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
____________ ,令
,则数列
的前n项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2669d696ea9194aa530835db09909c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d046ec9d9aaac508a16462f2980ca18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c68b253787b7980d259a243ee42ecfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/917482bcd9948fdd030dd86b51f585c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ced55125101a813dd26072af98b97f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd9e2298ae0163ba37bd06e716210c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
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