对于任意一个四位正整数m,若m的各位数字都不为0,且千位数字与百位数字不相等,十位数字与个位数字不相等,那么称这个数为“互异数”.将一个“互异数”m的任意一个数位上的数字去掉后得到四个新三位数,把这四个新三位数的和与3的商记为Fm.例如,“互异数”m=1234,去掉其中任意一位数后得到的四个新三位数分别为:234、134、124、123,这四个三位数之和为234+134+124+123=615,615÷3=205,所以F(1234)=205.
(1)计算F(1345)和F(8132);
(2)若“互异数”n=8900+10x+y(1≤x≤9,1≤y≤9,x、y都是正整数),F(n)也是“互异数”且F(n)能被8整除,求n的值.
(1)计算F(1345)和F(8132);
(2)若“互异数”n=8900+10x+y(1≤x≤9,1≤y≤9,x、y都是正整数),F(n)也是“互异数”且F(n)能被8整除,求n的值.
更新时间:2022-04-08 15:47:39
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解答题-计算题
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【推荐1】计算:
(1)-(-2.5)+(+2.2)-3.1+(-0.5)-(+1.1)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599e91eb63700e78c591b597f1c32a42.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a567c39d0843c915b5ee65a16252faa1.png)
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35761242223ed3aa676c7155112bcc3.png)
(5)(-1)9×(-3)3-30
(6)-︱-3︱×(-4)-6÷(-
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(1)-(-2.5)+(+2.2)-3.1+(-0.5)-(+1.1)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599e91eb63700e78c591b597f1c32a42.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a567c39d0843c915b5ee65a16252faa1.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35761242223ed3aa676c7155112bcc3.png)
(5)(-1)9×(-3)3-30
(6)-︱-3︱×(-4)-6÷(-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
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【推荐2】对于直线上三个点R,S,T,我们规定:如果R,S之间的距离等于R,T之间的距离的m倍(m为正整数),则R叫做S到T的m点.如图(1),数轴上A,B,C,D四点表示的数分别为
,3,
,4,则C是B到A的2点,D是A到B的7点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/cb8bbd09-1f1d-4a97-b5e2-4c7ae2f2e731.png?resizew=271)
(1)A是B到C的________点,B是A到D的_______点;
(2)若A到B的n点与B到A的n点是同一点E,则
________,E表示的数是_______;
(3)如图(2),若F是A到B的8点,求点F表示的数;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/f39396a0-2ee2-4b38-b11e-e7d7e6c64b5f.png?resizew=270)
(4)若P是A到B的k点,Q是B到A的k点.直接写出点P,Q之间的距离.(用含k的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/cb8bbd09-1f1d-4a97-b5e2-4c7ae2f2e731.png?resizew=271)
(1)A是B到C的________点,B是A到D的_______点;
(2)若A到B的n点与B到A的n点是同一点E,则
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(3)如图(2),若F是A到B的8点,求点F表示的数;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/f39396a0-2ee2-4b38-b11e-e7d7e6c64b5f.png?resizew=270)
(4)若P是A到B的k点,Q是B到A的k点.直接写出点P,Q之间的距离.(用含k的式子表示)
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解题方法
【推荐1】如果有一个三位数
,百位为9,十位和个位之和也是9,我们把这个三位数称为“尔畔数”,把
的百位和个位互换位置得到数
.并规定
,例如918,∵
且百位是9,∴918是“尔畔数”,
.
(1)判断946是不是“尔畔数”,求出
;
(2)已知
和
都是“尔畔数”,且
,并规定
,求
的最大值为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5fdb9a3b671baa89b4f63402b8762d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a027127c77186252ff1201cf5498e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d66296340c83e933050a3e29ce0ff70.png)
(1)判断946是不是“尔畔数”,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a785a318de0e97fdae35550c2b3b86.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad8c05e350736614a8f076ba2f36589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e02653319f5187b3b27d150c5f9f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
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【推荐2】在平面直角坐标系
中,若点
和点
关于
轴对称,点
和点
关于直线
对称,则称点
是点
关于
轴、直线
的“二次对称点”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/ad2a5de8-14e2-4574-b973-09982c8ad9e9.png?resizew=488)
(1)已知:点
.
,
①若点
是点
关于
轴,直线
的“二次对称点”,则点
的坐标为_____________;
②若点
是点
关于
轴,直线
的“二次对称点”,则
的值为__________;
(2)已知直线
为第一、三象限角平分线,直线
为过点
且与
平行的一条直线.
①如图1,在正方形
中,已知点
,点
.设点
为直线
上一点,若正方形
的内部(不含边界)存在点
,使得点
是点
关于
轴,直线
的“二次对称点”,则点
的横坐标
的取值范围是__________;
②如图2,在正方形
中,已知点
,点
.若正方形
的边上存在点
,使得点
是点
关于
轴,直线
的“二次对称点”,且点
在坐标轴上,请直接写出
的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/ad2a5de8-14e2-4574-b973-09982c8ad9e9.png?resizew=488)
(1)已知:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c8c934fb978c8840bed9680408977c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eabc928e9c56772ecb3ea1ad3574308d.png)
①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef6fe3679e4dc29469edbccc75a682b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97f993a83cf2da35a873527cb913464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
①如图1,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e01c77ea8aec0f14e3e6c37ed374cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e01c77ea8aec0f14e3e6c37ed374cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②如图2,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a165d5682b8df5ce5ccc4f7b5c4649fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c783a26005e33592540980eb1e587fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db14a2ddc37f8c5986204f5c64d3adf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db14a2ddc37f8c5986204f5c64d3adf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】因为
,所以
.这说明
能被
整除,同时也说明多项式
有一个因式为
;另外,当
多项式
的值为
.阅读上述材料回答问题:
(1)由
可知,当
_时,多项式
的值为
;
(2)一般地,如果一个关于字母
的多项式
当
时,
的值为
,那么
与代数式
之间有一定的关系,这种关系是:_____;
(3)已知关于
的多项式
能被
整除,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2b4ce81e030cd5c9008a88f9c308db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac4d46cb160dd015c2c9299ea268e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53d52b96a715e591b44cf4f7ac4c6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c3fa8692612e51579e3cef22fd8c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53d52b96a715e591b44cf4f7ac4c6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c3fa8692612e51579e3cef22fd8c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9028edc2c7360b093add1839fa88a9c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53d52b96a715e591b44cf4f7ac4c6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
(1)由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bebd1975758aed2069711fdda31e5c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ccc4cf4efe92211c1e0e25c04ea6d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
(2)一般地,如果一个关于字母
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98914a2f34d457acf18e36d3b6eac5f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a11822989bd5116d4161d6fc8a369c9.png)
(3)已知关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc747e43ac1d04c48dff0bd55f5ce38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c3fa8692612e51579e3cef22fd8c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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