名校
解题方法
1 . 已知函数
,若对于其定义域
中任意给定的实数
,都有
,就称函数
满足性质
.
(1)已知
,判断
是否满足性质
,并说明理由;
(2)若
满足性质
,且定义域为
.
已知
时,
,求函数
的解析式并指出方程
是否有正整数解?请说明理由;
若
在
上单调递增,判定并证明
在
上的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2920db5488d51e8b5d25c5a8aadc12ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68672b2a835adeeaa4d9580d2d9fcc7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e811d5f049f3b6cb9ae6dfe12d3a3f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb9feeffdbbd6eef8b9c8a61aeb3ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ebb716b8aa64cf3a67871232807b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567a08e70e5a06c70fbad1d3864061a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e731337c844a9ad4ec7fb221528f87c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2dfaa0e63b9c720093ab80e2ed24c9d.png)
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2024-03-04更新
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140次组卷
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2卷引用:重庆市万州第一中学2023-2024学年高一下学期入学考试数学试卷
名校
解题方法
2 . 2024年春节期间,某家庭设计了一个抽红包游戏,以营造和谐轻松愉快的家庭氛围.游戏中有外观完全相同的红包共6个,其中装有10元,20元,30元的红包各两个,小明每次从中任意抽取3个红包,记录金额后放回,共抽2次.若每次抽的红包总金额超过60元记2分,超过40元不超过60元记1分,不超过40元不计分,两次结束得分恰好为3分奖励旺旺零食大礼包一份.
(1)求小明在第一次抽取中,抽出装有20元红包个数多于装有10元红包个数的概率;
(2)用随机变量X表示小明抽两次的得分总和,求X的分布列及期望.
(1)求小明在第一次抽取中,抽出装有20元红包个数多于装有10元红包个数的概率;
(2)用随机变量X表示小明抽两次的得分总和,求X的分布列及期望.
您最近一年使用:0次
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解题方法
3 . 在平面直角坐标系中,过直线
上任一点
作该直线的垂线
,
,线段
的中垂线与直线
交于点
.
(1)当
在直线
上运动时,求点
的轨迹
的方程;
(2)过
向圆
引两条切线,与轨迹
的另一个交点分别为
,
.
(i)证明:直线
与圆
也相切;
(ii)求
周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236a066876764d090523afe0ea734a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50154acc6ad77c6c777fffe3a08afb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f817fa2d2a8c4e38191900ed7730c879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(i)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
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4 . 某游乐园中有一座摩天轮.如图所示,摩天轮所在的平面与地面垂直,摩天轮为东西走向.地面上有一条北偏东为
的笔直公路,其中
.摩天轮近似为一个圆,其半径为
,圆心
到地面的距离为
,其最高点为
点正下方的地面
点与公路的距离为
.甲在摩天轮上,乙在公路上.(为了计算方便,甲乙两人的身高、摩天轮的座舱高度和公路宽度忽略不计)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/c50080be-44e3-4828-9bf3-8f8e58a640df.png?resizew=218)
(1)如图所示,甲位于摩天轮的
点处时,从甲看乙的最大俯角的正切值等于多少?
(2)当甲随着摩天轮转动时,从乙看甲的最大仰角的正切值等于多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc31960240afea742753b6a8dad6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4053cc2a31e9703bf80b62b5ea18c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c758c27bec97c234d1d818c40f3d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1d5a8cd34aff27b8ed21c977c3946f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d112c9693aa126c92bf1402a1f66bcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/c50080be-44e3-4828-9bf3-8f8e58a640df.png?resizew=218)
(1)如图所示,甲位于摩天轮的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)当甲随着摩天轮转动时,从乙看甲的最大仰角的正切值等于多少?
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2024-02-27更新
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262次组卷
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3卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期开学学业质量联合调研抽测数学试题
名校
5 . 已知有
个连续正整数元素的有限集合
(
,
),记有序数对
,若对任意
,
,
,
且
,A同时满足下列条件,则称
为
元完备数对.
条件①:
;
条件②:
.
(1)试判断是否存在3元完备数对和4元完备数对,并说明理由;
(2)试证明不存在8元完备数对.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244a73e2cab2b626e12058164680d7cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6526915197667b48dc2e6c1ff413bcf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ac49ab7c8001c209b8611b9ea40d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4a8ca987823fe459fafc1c4fd057d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9458be5eac5e4b7fbd28850e43d96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba54a91d651db38d3a13a461252223e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a205f096c854a2f7cd71255056f9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9169084fc046cdf9b9831f4030f58217.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34affbf06b09098b13a5b89c0989fb8.png)
(1)试判断是否存在3元完备数对和4元完备数对,并说明理由;
(2)试证明不存在8元完备数对.
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2024-02-23更新
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268次组卷
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2卷引用:重庆市乌江新高考协作体2023-2024学年高一下学期开学学业质量联合调研抽测数学试题
名校
6 . 如果函数
的导数
,可记为
.若
,则
表示曲线
,直线
以及
轴围成的“曲边梯形”的面积.
(1)若
,且
,求
;
(2)已知
,证明:
,并解释其几何意义;
(3)证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d4d758bac9a7272c1d40a5ea4176c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd8f5b33be6db5be0833f1801bd7a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6a5e6776e205fb09d8a689e1638947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436ff3cf58de28b55f7605675a47d818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ed0afb829f4d5c61ce89a556376d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0dc2a031743126b8b4fabb843a55bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc282dae4ac9132196ac5d13f63b901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c38abf9dbef1c45d9fd8143798fa0ea.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59176a49cf2e21c94cf550888de88c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
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2024-02-20更新
|
2402次组卷
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7卷引用:重庆市第八中学校2023-2024学年高三下学期入学适应性考试数学试题
重庆市第八中学校2023-2024学年高三下学期入学适应性考试数学试题(已下线)压轴题函数与导数新定义题(九省联考第19题模式)练(已下线)微考点2-5 新高考新试卷结构19题压轴题新定义导数试题分类汇编湖北省十一校2024届高三联考考后提升数学模拟训练一湖北省黄冈市浠水县第一中学2024届高三下学期第三次高考模拟数学试题(已下线)第5套 新高考全真模拟卷(二模重组)(已下线)压轴题01集合新定义、函数与导数13题型汇总-2
名校
7 . 已知函数
.
(1)讨论
的单调性;
(2)设
,
分别为
的极大值点和极小值点,记
,
.
(ⅰ)证明:直线AB与曲线
交于另一点C;
(ⅱ)在(i)的条件下,判断是否存在常数
,使得
.若存在,求n;若不存在,说明理由.
附:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef3e79110067a46276f0869bea25af5.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
(ⅰ)证明:直线AB与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(ⅱ)在(i)的条件下,判断是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06318573bd8cf7f9b3ff443b31803df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397471107e2d3a5ccedda940a29a361a.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac45788afe168a32cfc51ad8e1429577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b4427f76042503d0ba2302a55fe33d.png)
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2024-02-20更新
|
972次组卷
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6卷引用:重庆市第一中学校2023-2024学年高二下学期开学考试数学试题
8 . 同余定理是数论中的重要内容.同余的定义为:设a,
,
且
.若
则称a与b关于模m同余,记作
(modm)(“|”为整除符号).
(1)解同余方程
(mod3);
(2)设(1)中方程的所有正根构成数列
,其中
.
①若
(
),数列
的前n项和为
,求
;
②若
(
),求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538f8c7f224b743a48128033066b34cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6b18b109a656b62fb173680ae99ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d71082924d5b4349c3b0152930b7b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a07e47345c46575e63ff4c3df4557bc.png)
(1)解同余方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b31b29e7f0705c981bd91329bcfee7.png)
(2)设(1)中方程的所有正根构成数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c002c44d45907aad22da19859193270b.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5653b60d16ec4e653518f0562680250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addee6ce5163a2580888ce2da22714af.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ac8a1dc1eda952f7145a08c047ebf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2024-02-03更新
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2811次组卷
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9卷引用:重庆市万州二中教育集团2023-2024学年高二下学期入学质量监测数学试题
重庆市万州二中教育集团2023-2024学年高二下学期入学质量监测数学试题湖北省武汉市华中师大第一附中2023-2024学年高二下学期数学独立作业(一)安徽省合肥市第一中学2024届高三上学期期末质量检测数学试题(已下线)压轴题函数与导数新定义题(九省联考第19题模式)练(已下线)新题型01 新高考新结构二十一大考点汇总-3(已下线)黄金卷08(2024新题型)(已下线)题型18 4类数列综合浙江省部分学校联考2024届高三高考适应性测试数学试题广东省揭阳市普宁市华美实验学校2023-2024学年高二下学期第一次阶段考试数学试题
名校
9 . 在图1所示的平面多边形中,四边形
为菱形,
与
均为等边三角形.分别将
沿着
,
翻折,使得
四点恰好重合于点
,得到四棱锥![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e52045125fa10787dcd577c38147bd.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/3e86ac98-85f0-4774-82e0-0339c4a48245.png?resizew=328)
(1)若
,证明:
;
(2)若二面角
的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d668c1a65824451fb5cb2908e4fc229f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b42d15b184904764e9a374554fc589c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06106b41c659977a527753f2736c9f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5262192e49cf903ee094457dbc250f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722932a41451ef41599d297bf10339c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e52045125fa10787dcd577c38147bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e23c8a2244688ed4c848bc4fb4ca576.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/3e86ac98-85f0-4774-82e0-0339c4a48245.png?resizew=328)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036de574712cad14bddadf6653c7e714.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daffe333e60992bb4590370b79b806d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2024-02-03更新
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1101次组卷
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5卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期开学学业质量联合调研抽测数学试题
重庆市乌江新高考协作体2023-2024学年高二下学期开学学业质量联合调研抽测数学试题湖北省十堰市2023-2024学年高二上学期期末调研考试数学试题广东省2024届高三数学新改革适应性训练二(九省联考题型)(已下线)(新高考新结构)2024年高考数学模拟卷(二)(已下线)第三章 折叠、旋转与展开 专题一 平面图形的翻折、旋转 微点8 平面图形的翻折、旋转综合训练
名校
10 . 遗传学在培育作物新品种中有着重要的应用.已知某种农作物植株有
,
,
三种基因型,根据遗传学定律可知,
个体自交产生的子代全部为
个体,
个体自交产生的子代全部为
个体,
个体自交产生的子代中,
,
,
,个体均有,且其数量比为
.假设每个植株自交产生的子代数量相等,且所有个体均能正常存活.
(1)现取个数比为
的
,
,
植株个体进行自交,从其子代所有植株中任选一株,已知该植株的基因型为
,求该植株是由
个体自交得到的概率;
(2)已知基因型为AA的植株具备某种优良性状且能保持该优良性状的稳定遗传,是理想的作物新品种.农科院研究人员为了获得更多的
植株用于农业生产,将通过诱变育种获得的Aa植株进行第一次自交,根据植株表现型的差异将其子代中的
个体人工淘汰掉后,再将剩余子代植株全部进行第二次自交,再将第二次自交后代中的
个体人工淘汰掉后,再将剩余子代植株全部进行第三次自交……此类推,不断地重复此操作,从第
次自交产生的子代中任选一植株,该植株的基因型恰为AA的概率记为
(
且
)
①证明:数列
为等比数列;
②求
,并根据
的值解释该育种方案的可行性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ac9722099868f11c37067a24f3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e25893a9dc7878e82704f1eca13cd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ac9722099868f11c37067a24f3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ac9722099868f11c37067a24f3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e25893a9dc7878e82704f1eca13cd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ac9722099868f11c37067a24f3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e25893a9dc7878e82704f1eca13cd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c964a6bfdb3b142a4745ff5eb24cb3e4.png)
(1)现取个数比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01abe2dd69e3eaf962c390d5ebdd5ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ac9722099868f11c37067a24f3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e25893a9dc7878e82704f1eca13cd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
(2)已知基因型为AA的植株具备某种优良性状且能保持该优良性状的稳定遗传,是理想的作物新品种.农科院研究人员为了获得更多的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ac9722099868f11c37067a24f3892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5604a87a7559957790a4256fdb9ae1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
①证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f489dc1593ddbc13c73226946e8143a.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b6207e160d5dac103e3693eb456a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b6207e160d5dac103e3693eb456a25.png)
您最近一年使用:0次
2024-01-25更新
|
1321次组卷
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4卷引用:重庆市乌江新高考协作体2024届高三下学期开学数学试题