1 . 我国南北朝的伟大科学教祖暅于5世纪提出了著名的祖暅原理,意思就是:夹在两个平行平面之间的两个几何体,被平行于这两个平面的任意平面所截,如果截得的两个几截面的面积总相等,那么这两个几何体的体积相等.如图1,为了求半球的体积,可以构造一个底面半径和高都与半球的半径相等的圆柱,与半球放置在同一平面上,然后在圆柱内挖去一个以圆柱下底面圆心为顶点,圆柱上底面为底面的圆锥后得到一个新几何体,用任何一个平行底面的平面去截它们时,两个截面面积总相等.如图2,某个清代陶瓷容器的上、下底面为互相平行的圆面(上底面开口,下底面封闭),侧面为球面的一部分,上、下底面圆半径都为6cm,且它们的距离为24cm,则该容器的容积为______
(容器的厚度忽略不计).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6d1d99afa158b4ba4fc0dae562fcc1.png)
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2 . 如图所示,在边长为3的等边三角形
中,
,且点P在以
的中点O为圆心、
为半径的半圆上,若
,则下列说法正确的是____________ .
①
②
的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb03865bc5bbd5acdf68260d6a1454f6.png)
③
最大值为9 ④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de75a2e98f7c16a0be0ccbb8fd4b72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81889370d45239939a36de53c4445d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95d146bdcc8ac0a256c12696e9b9826.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5c4b886a48affa3e6103f7e4c2bfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb03865bc5bbd5acdf68260d6a1454f6.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ccdceb57c6df84b42b1b9032a636e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de75a2e98f7c16a0be0ccbb8fd4b72b.png)
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解题方法
3 . 在棱长均为2的正三棱柱
中, E为
的中点.过AE的截面与棱
分别交于点F, G.
(1)若F为
的中点,求三棱柱被截面AGEF分成上下两部分的体积比 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301709b97852b4c2b951cfa2b2cfa2d2.png)
(2)若四棱锥
的体积为
求截面 AGEF 与底面ABC所成二面角的正弦值;
(3)设截面AFEG的面积为
面积为S₁,△AEF面积为
当点F在棱
上变动时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770abdd10660689c605577f9cb6d9db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa717be2a43918b9eb13655f86042a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b828011b4a0be31af4f30d829d7e30b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/18/c1fc03ae-c978-409e-8fa2-9e23147b9838.png?resizew=123)
(1)若F为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5fb47a5caaa26007a7606acf05c52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301709b97852b4c2b951cfa2b2cfa2d2.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eb4a437f9aee581cb2d0fff0d9d588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c181e33261a6c8df1e5291b0a119dc9.png)
(3)设截面AFEG的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431bceebfd7dbb3dcbd0348e486a97fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c9821bd2db0d34acbd7acd0fb2bb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5fb47a5caaa26007a7606acf05c52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17646ce1c1499a928584904d416a2a2.png)
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4 . 代数基本定理:任何一个
次复系数多项式方程
至少有一个复根.由此可得如下推论:
推论一:任何一元
次复系数多项式
在复数集中可以分解为
个一次因式的乘积;
推论二:一元
次多项式方程有
个复数根,最多有
个不同的根.即一元一次方程最多有1个实根,一元二次方程最多有2个实根等.
推论三:若一个
次方程有不少于
个不同的根,则必有各项的系数均为0.
已知
.请利用代数基本定理及其推论解决以下问题:
(1)求
的复根;
(2)若
,使得关于
的方程
至少有四个不同的实根,求
的值;
(3)若
的图像上有四个不同的点
,以此为顶点构成菱形
,设
,
,求代数式
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab009a153dfcc13ba9eb4916c76f8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b7bff9b2431134f7683a9cc4e68acd.png)
推论一:任何一元
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab009a153dfcc13ba9eb4916c76f8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
推论二:一元
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
推论三:若一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14c686bfce270ec65d068555d1866ff.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadabea3f5008d97a32382752e62bdd8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec4e65c4c043edef8084b292675395c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcecb855c13987b207aec2db73c9ec5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc04eee630e386f7be4ac709ff4e16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df74fc4cedb204eb6dcce64b706e99c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0c942fae0e9dd2d219ad8269511898.png)
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5 . 设
为
的重心,满足
.若
,则实数
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9dda408d508f71aa2a839a70a10b8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bce7196f34942ca7bc7fcb970b8cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
6 . 正三棱柱
中,
为棱
的中点,
为线段
(不包括端点)上一动点,
分别为棱
上靠近点
的三等分点,过
作三棱柱
的截面
,使得
垂直于
且交
于点
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31dea35a4e0ca65105e1f12aeb0fe5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.![]() ![]() | B.存在点![]() ![]() ![]() |
C.当![]() ![]() ![]() | D.三棱锥![]() ![]() |
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3卷引用:安徽省县中联盟(江南十校)2023-2024学年高一下学期5月月考数学试题
安徽省县中联盟(江南十校)2023-2024学年高一下学期5月月考数学试题河南省安阳市林州市第一中学2023-2024学年高一下学期5月月考数学试题(已下线)专题07 立体几何小题常考题型归类-期末考点大串讲(人教B版2019必修第四册)
名校
解题方法
7 . 在
中,
,
,
对应的边分别为
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b7cf620e36b473d399931a1bf74044.png)
(1)求
;
(2)若
为线段
内一点,且
,求线段
的长;
(3)法国著名科学家柯西在数学领域有非常高的造诣;很多数学的定理和公式都以他的名字来命名,如对于任意的
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bac31c743e047705e38e6e3880a73bb.png)
被称为柯西不等式;在(1)的条件下,若
,求:
的最小值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b7cf620e36b473d399931a1bf74044.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e12918bd035d4e57797c078026b2e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d38cce21b48df42041e4b8b2a7db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)法国著名科学家柯西在数学领域有非常高的造诣;很多数学的定理和公式都以他的名字来命名,如对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751f52d4cf239511828e3960e41c61df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bac31c743e047705e38e6e3880a73bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214b60823ecc7a03759fb1df0f6d8d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1cd0450780778d5ae577e676f6a741d.png)
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546次组卷
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4卷引用:山东省济宁市兖州区2023-2024学年高一下学期期中质量检测数学试题
山东省济宁市兖州区2023-2024学年高一下学期期中质量检测数学试题山东省济宁市2023-2024学年高一下学期期中数学试卷(已下线)专题05 解三角形大题常考题型归类-期期末考点大串讲(人教B版2019必修第四册)福建省安溪第一中学2023-2024学年高一下学期5月份质量检测数学试题
名校
解题方法
8 . 如图,设
中角A,B,C所对的边分别为
为
边上的中线,已知
且
.
的面积;
(2)设点
,
分别为边
上的动点,线段
交
于
,且
的面积为
面积的一半,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97598771e2f206cd08b11e552121490b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55ca16acc058af4ae6a87ddd6c55234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e26b3b7e7293a85fa650b57cedba871.png)
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解题方法
9 . 已知函数
满足
,且
,当
时,
.函数
.
(1)求实数
的值;
(2)当
时,求
的解析式;
(3)设
,是否存在实数
,使不等式
在
时恒成立?若存在,求实数
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0702195255c51922822a8185339b17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed670b1f668778c6243f3f7470ee7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389c5eb9278242f235dfcb45e687f7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa755c7216812b2cd333563f6acd81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d378143a598defcc8adad769fd205173.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a0f0ee999bab322b1f5290fc8571cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670fcbf66c7c5322f9bf2bec0d157ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0e7e4a025141869980b3a1aab55b8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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10 . 已知向量
,
,定义运算
,同时定义
.
(1)若
,求实数
的取值集合;
(2)已知
,求
;
(3)已知定义域为
的函数
满足
为奇函数,
为偶函数,且
时,
,是否存在实数
,使
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ec6dba44a83ae69146c26a2eec325c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66717aa3e7a771427c1d4433c77a5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4817c9821c3c5268e665a3ebcfe2e9cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/153f8261059b286d175e53adb666d0bd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e993a236a70e4a094013a28c07079f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237b1a6f3e6ee0ef92b4aef7bffe58ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5285f8cfbab2baf73267d7649a58ac.png)
(3)已知定义域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91340ce6d32493c33527a32c2d448896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffde73ff7d3cd5125eb8d8a17a9f01c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994dcf841d356002fcebaed37497013c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de03de9f4bea859252f0158b32acf378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb0b435b3f1a00ee1df0d02384d6e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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