1 . 设
,
,且
.称
为好数,如果
使上述所定义的
满足
且
.求全体好数在数轴上所对应的所有区间的长度之和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719c69e9c14fc76e23728a24157a1539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c80c869a76a4b0cb8633719d7f5603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4ebc2dd452f165ed53fc594e54e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44be578a262959b5b2d97a1ce25f7b42.png)
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2 . 在平面直角坐标系
中,过
轴上一点
作两条直线
,
,其中
,
,
,
均在抛物线
:
上.已知
,
分别经过
轴上的点
,
,试比较
与
的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34876d748f30fa4fc2eb6a686b5ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd185f841f1a65d36be61eabadc1228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5206e025c703ef889c6d596f350d70f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722a6a702db7dcb53be644d6fd614e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd946bffbd8d572c661f791a75c3bdd.png)
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3 . 现有六人排成一列,每人在红,黄,蓝,白,黑五种颜色的球中选一个(每种颜色的球足够多).要求任意相邻两人所选的球或者同色,或者至少有一个为白色,则满足要求的选球方式数为______ .
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4 . 实数
与函数
满足
,且对任意
均有
.令
,则
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c48d9f4e43b9a862197f2d300ed1ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c2616940f893993263155c95dadab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6d896bbcc6eb0f76e42ad67c0c5e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdd597c8d015408e2feb467efef21d0.png)
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5 . 甲,乙两人进行一场七局四胜制的游戏,任何一人累计获胜四局即为胜方,同时游戏结束,另一人为负方.若在每局中,双方各有
的概率获胜,则游戏结束时胜方比负方多获胜的局数的数学期望为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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6 . 将顺序为1,2,…,2020的2020张卡片变成1011,1,1012,2,…,2020,1010的顺序,即原先的前1010张卡片移至第2,4,…,2020张,这称为一次操作.若从顺序1,2…,2020开始操作,则至少经过______ 次操作可以恢复到初始顺序.
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7 . 一条直线上有三个数字
,
,
,数字
位于
,
之间,称数值
为该直线的邻差值.现将数字1~9填入
的格子中,每个数字均出现,过横向三个格子、竖向三个格子及对角线三个格子共形成8条直线.则这8条直线的邻差值之和的最小值为______ ,最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1030fe85784473ae9070abc7bcfb6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d8fccf0cf8b55a68488fe48b78744.png)
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8 . 若
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2347c3b8239a5f8e66d5f585dee03cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f61d8c7d2c5193edf986a8e9377146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99074f989e74d5ff306b4b7b7a379c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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9 . 已知集合
,
为正整数.若对任意的
,
被4整除,但不被16整除,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a3f24673b6e954db3a8b229d8c4564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f5ad482e14ebc54b05f8da6f729cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8692a851a72427d95eac78f2efd9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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10 . 使得
对一切正实数
,
恒成立的
最大实数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e8a2d3734f01397e337b2fc81196dc.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/f0a532e15e232cb4b99a8d4d07c89575.png)
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