1 . 椭圆有这样的光学性质:从椭圆的一个焦点出发的光线,经椭圆反射后,反射光线经过椭圆的另一个焦点.根据椭圆的光学性质解决下题:已知曲线
的方程为
,其左、右焦点分别是
,
,直线
与椭圆
切于点
,且
,过点
且与直线
垂直的直线
与椭圆长轴交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80e7a0587a8546c4efafe398c6a263f.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3cf706fe2ae0b2e99041ec1f4bf9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f977940552e09f59ea959965522dfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80e7a0587a8546c4efafe398c6a263f.png)
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2 . 数列
首项为
,公比为
的无穷等比数列,且
的各项和为m,则m=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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3 . 已知
为等差数列,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329785900390130a04a57d0b55aaa569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3fcb5d83cbbc3eb6d5d474b167c7bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
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4 . 若函数
在区间
上存在最小值,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd6b112eed8da8949279d95f3271bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0b1b825dd45b1031f9cd964c575e573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 已知数列
的通项公式
,记数列
落在区间
内项的个数为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4ed5a2e53b4532809a2819d9186fef.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7405f8af1ab6ae282350762c167edcc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64019eb70caac556b3c14d07d73db216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4ed5a2e53b4532809a2819d9186fef.png)
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6 . 若对于一个实常数
,恰有三组实数对
满足关系式
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3098f7c422abe595b765b0fa72e97f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
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解题方法
7 . 如图,PA,PB,PC,他们之间每两条的夹角都是
,则直线PC与平面PAB所成角的大小为 __________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/71dd45ec-e413-4394-9266-a12414dfde33.png?resizew=192)
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8 . 艾宾浩斯遗忘曲线是1885年由艾宾浩斯
提出的,其描述了人类大脑对新事物遗忘的规律,该曲线对人类记忆认知研究产生了重大影响. 设初次记忆后经过了
小时,那么记忆率
近似的满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2c8a44e12b782cc200d2a7d7de3d81.png)
,
. 某学生学习一段课文,若在学习后不复习,1天后记忆率为
,6天后记忆率为
,则该学生在学习后不复习,4小时后记忆率约为______ (保留两位小数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4f265f03916d608df60ff52072b71f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2c8a44e12b782cc200d2a7d7de3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39e7328deebc1c72333d47961ad58b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2924da252a552fbeead9c3375ac0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b97a90063dbbc85ff87505491896af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da7a73e6720c88e33875b7b66e06097.png)
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2024-01-05更新
|
165次组卷
|
2卷引用:安徽省安庆市第一中学2023-2024学年高一上学期12月“三新”检测考试数学试题
9 . 如图,一个圆锥挖掉一个内接正三棱柱
(棱柱各顶点均在圆锥侧面或底面上),若棱柱侧面
落在圆锥底面上.已知正三棱柱底面边长为
,高为2,则该几何体的表面积______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/8c4f2445-53a5-45e7-9bc3-85bd35aa1504.png?resizew=119)
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解题方法
10 . 下图是位于南桥工商银行和大菜场南面的一个正方体雕塑,其六个面镂空刻满了大美奉贤的多个地标.可以将其视为:某正方体的顶点A在平面
内,三条棱
都在平面
的同侧.若顶点B,C,D到平面
的距离分别为
,
,2,则该正方体外接球的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766565857d28617cc4c2a26ecf76ec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/62aa911e-d1ec-4e76-8221-d0a51d5c8a5b.png?resizew=343)
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