1 . 已知数列
和
满足:
.
(1)设
求
的值;
(2)设
求数列
的通项公式;
(3)设
证明:______.
请从下面①,②两个选项中,任选一个补充到上面问题中,并给出证明.
①
;②
其中
.
注:若两个问题均作答,则按第一个计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08416257a7c5427d9266e9ee46ee492b.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb3a4652ccd6c113de9645852973d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08360bbdf8e90d7d35445ea6e9923658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a27e634b912cd518c69ff3ffb74db8.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc35823313a638d6dcf399efaeff9e0.png)
请从下面①,②两个选项中,任选一个补充到上面问题中,并给出证明.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51206c051804c48be676c6510c63ce3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b09b55a8bc170344adf78ee08ea8892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce671943072553870e3c059e835e980c.png)
注:若两个问题均作答,则按第一个计分.
您最近一年使用:0次
2 . 在数学中,把只能被自己和1整除的大于1自然数叫做素数(质数).历史上研究素数在自然数中分布规律的公式有“费马数”
;还有“欧拉质数多项式”:
.但经后人研究,这两个公式也有局限性.现有一项利用素数的数据加密技术—DZB数据加密协议:将一个既约分数的分子分母分别乘以同一个素数,比如分数
的分子分母分别乘以同一个素数19,就会得到加密数据
.这个过程叫加密,逆过程叫解密.
(1)数列
中
经DZB数据加密协议加密后依次变为
.求经解密还原的数据
的数值;
(2)依据
的数值写出数列
的通项公式(不用严格证明但要检验符合).并求数列
前
项的和
;
(3)为研究“欧拉质数多项式”的性质,构造函数
是方程
的两个根
是
的导数.设
.证明:对任意的正整数
,都有
.(本小题数列
不同于第(1)(2)小题)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fa614dd0a4ef38831d742ed3e2c883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e8e0703bc265e4b6659d5076564fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09c918f20cda7e931d16ba79baf0020.png)
(1)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c14d9ae06f864498048d55088ff4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c12274ae6ca7bc2d0ad2ced6a0337d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c14d9ae06f864498048d55088ff4e6.png)
(2)依据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c14d9ae06f864498048d55088ff4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)为研究“欧拉质数多项式”的性质,构造函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26cf2a1b49eb3f90d64d7fc526bf4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a6ce810257873cb94a56a93b39537d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00e0b2cfc9260694affc6b33f59eb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6148cff72e9eabbf9912e158b52f0129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2024-05-28更新
|
532次组卷
|
2卷引用:安徽省皖北五校联盟2024届高三第二次联考数学试卷
名校
3 . (1)设集合
,
,求:
,
;
(2)已知
、
、
都是正数,且满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd810bd3384aa74f58f8b5f498be415d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db38e7861848bb3498f7e5dc5ff32d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)已知
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5d0b7794c891140d333dd2615a2211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e55f3ec8270bc70fe46ef786bfb6a69.png)
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解题方法
4 . 设
,已知函数
的最小值为2.
(1)求证:
;
(2)
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1f328fcd670bfd11fa568abdf7f6c4.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0d5bfaa7081b3b1c81757f7846aa12.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea7936ad4048b3fc87a81d5469ec33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2f9e3626172458e0d541aefb6bc9b1.png)
您最近一年使用:0次
2023-04-10更新
|
418次组卷
|
3卷引用:贵州省普通高等学校招生2023届高三适应性测试数学(理)试题
解题方法
5 . 已知函数
,
.无理数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
(1)求证:
为奇函数;
(2)计算
的值;
(3)求证:R不是
的单调区间;
(4)求函数
的最小值;
(5)指数函数
是否可以表示成一个奇函数与一个偶函数的和的形式,若可以,直接写出你的结论,若不可以,请说明理由;
(6)已知
求证:
恒大于零.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e755e25eaafdc12a2d6aa6d3178cf4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3b8f0a0cb7d7a8e732c33a62fdfacf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e755e25eaafdc12a2d6aa6d3178cf4b.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f7a0971ccb6c1aeab5486bb4d8cc6a.png)
(3)求证:R不是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3b8f0a0cb7d7a8e732c33a62fdfacf.png)
(4)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3b8f0a0cb7d7a8e732c33a62fdfacf.png)
(5)指数函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae1b87c23b45ce5e5e74d5b1d73234.png)
(6)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267a5770b8362cd8aa9bb573cf68633d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
您最近一年使用:0次
名校
6 . 均值不等式
可以推广成均值不等式链,在不等式证明和求最值中有广泛的应用,具体为:
.
(1)证明不等式
.
(2)上面给出的均值不等式链是二元形式,其中
指的是两个正数的平方平均数不小它们的算数平均数,类比这个不等式给出对应的三元形式,即三个正数的平方平均数不小于它们的算数平均数,并尝试用分析法证明猜想.(
个数的平方平均数为
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72dc44cb9d5684d5377141fcd393c415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ece659f1e648942b5c9f7155685dcc.png)
(1)证明不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b40495f9b82c312c90382cb0a1b75f.png)
(2)上面给出的均值不等式链是二元形式,其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7806d740bdb93071c7580a9c6db0d09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40a7ac954477ada360785f8fe82a162.png)
您最近一年使用:0次
解题方法
7 . 已知函数
在
上单调递减.
(1)求实数
的取值范围;
(2)当实数
取最大值时,方程
恰有二解,求实数
的取值范围;
(3)若
,求证:
.(注:
为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b8744c94d54246ce023e8a88b998c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d303edb2b74f0152e9da9e0b77a1ca37.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f826c4322fdbf0838670d917f7735e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f86f9b0f357d6166ebc79012bf88706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55278cd8cbc74b25a26141e20fe78e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9003a22f3bfbdc2dba7869c0f7d54c8c.png)
您最近一年使用:0次
名校
解题方法
8 . 在平面直角坐标系
中,函数
的图象过点
,且在点P处的切线
恰好与直线
垂直.
(1)求函数
的最大值;
(2)若正数
,
,
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7455cd7a24b4985e0779efc79b5d11bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62648bbd5919a180a059169c3fea98e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676b05d4baad4148c4fb3b052f32d065.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b85cbf4d2253bd4077cfb4886751e0.png)
(2)若正数
![](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/2193edd12ed74d977e2edb6f3c7f3058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972a76452271b2bb0ec10a450a86607f.png)
您最近一年使用:0次
2021-05-28更新
|
218次组卷
|
3卷引用:西南名校联盟2021届高三下学期4月高考适应性考试数学(理)试题