解题方法
1 . 已知集合
,若不等式
对
中任意
都成立,则实数
的取值范围为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4ff5263c822b207bdbf00663d47a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8168db3449e0942096659d683b1240c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知
,则数列
的最小值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095540ea7ceec5d8c686147f3701fe38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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3 . 已知函数
,若数列
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd3b3ac25920d6e6e1f87929042882c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bff9153c82e73db160421d64b86626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb4c2355ce193435dc15fdc006fd237.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知无穷数列
是各项均为正数的等差数列,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 设
,函数
,则
的
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75641e80389f08cdfe19c3d6063251e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300cd4f5096e25c198ad9f6338f3dff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 若一系列函数的解析式相同,值域相同,但定义域不同,则称这些函数为“孪生函数”,那么函数解析式为
,值域为
的“孪生函数”共有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2751c5819303b8e60add2356bd7c808b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a97394691182434ca4b4a0a6c05b42.png)
A.10个 | B.9个 | C.8个 | D.7个 |
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解题方法
7 . 已知等差数列
满足
,设
是数列
的前
项和,记
.
(1)求
;
(2)比较
与
的大小;
(3)如果函数
对一切大于1的正整数
,其函数值都小于零,那么
应满足什么条件?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d11141ecb82398a9adc5dfdb0b9d94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c38fb4d9ed4f1debb61d97e693fb5f5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08d8e48f1a494bd7fa205362035952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35d879b534a1dc0102d8fdf0005a4f2.png)
(3)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859e3e04d48088f02fd81881604c5975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
您最近一年使用:0次
2024-04-07更新
|
218次组卷
|
2卷引用:第五届高一试题(初赛)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
8 . 已知数列
的通项公式
为它的前
项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39feec096f8625e6fdad71731fa799c1.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287260f78f0c1a5a28ef22934d727a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39feec096f8625e6fdad71731fa799c1.png)
您最近一年使用:0次
2024-03-30更新
|
224次组卷
|
2卷引用:第六届高一试题(初赛)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
解题方法
9 . 已知函数
是函数
的一个零点,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11679e8e40d616cc4d2b8e84be8d6e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a6f9582de688b290d77c6c16c09c0a.png)
您最近一年使用:0次
2024-03-30更新
|
96次组卷
|
2卷引用:第六届高一试题(初赛)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
解题方法
10 . 函数
是______ 函数.(填“奇”或“偶”或“非奇非偶”或“既奇又偶”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59950bd08978aea41e9bc7a8f00ad43.png)
您最近一年使用:0次