对任意一个正整数m,如果m=k(k+1),其中k是正整数,则称m为“矩数”,k 为m的最佳拆分点.例如,56=7×(7+1),则56是一个“矩数”,7为56的最佳拆分点.
(1)求证:若“矩数”m是3的倍数,则m一定是6的倍数;
(2)把“矩数”p与“矩数”q的差记为 D(p,q),其中p>q,D(p,q)>0.例如,20=4×5,6=2×3,则 D(20,6)=20﹣6=14.若“矩数”p的最佳拆分点为t,“矩数”q的最佳拆分点为s,当 D(p,q)=30时,求
的最大值.
(1)求证:若“矩数”m是3的倍数,则m一定是6的倍数;
(2)把“矩数”p与“矩数”q的差记为 D(p,q),其中p>q,D(p,q)>0.例如,20=4×5,6=2×3,则 D(20,6)=20﹣6=14.若“矩数”p的最佳拆分点为t,“矩数”q的最佳拆分点为s,当 D(p,q)=30时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537c64844b32a708d299ff92dc53c747.png)
更新时间:2018-04-09 20:22:36
|
【知识点】 新定义下的实数运算
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】在平面直角坐标系
中,对于没有公共点的两个图形M、N给出如下定义:P为图形M上任意一点,Q为图形N上任意一点,若P、Q两点间距离的最大值和最小值分别为
和
,则称比值
为图形M和图形N的“距离关联值”,记为
.已知
顶点坐标为
,
,
,
.
边上任意一点,则
的最大值为______,最小值为______,因此k(点O,
)=______;
(2)若
为
对角线
上一点,
为
对角线
上一点,其中
.
①若
,则k(线段
,
)
______;
②若
(线段
,
)
,求m的取值范围;
(3)若
的对角线交点为O,且顶点
在直线
上,顶点
在直线
上,其中
,请直接用含n的代数式表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3079cd2cfe2309f4ba356f8d77668c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e9c63560f14f6803654be1b5f35506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16a46f03535c5af872fa8fa9f21a431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa1c55752d62927e3948345bf971578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59debad0cd25aec393499db0028f17c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4c2b0fdda3b964b28b82daa3d3309a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88cb2049a0fafe0be939d77d4e8ba1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54daf030da83535f4005d5c6df144677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25751ad0659b1f43b4f7342a189d4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0d30b03b6289d95cae36accda22074.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9793218daaad4758ad4d2f594f7651d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cb5487a1752bdf323e85d4ca5b934d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8aca1bef6ef03c21e395929c694d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4610754dff007c541aa4887d8705329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82adb9b4f741dcdd6bf523a1b008f5b.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】定义:在平面直角坐标系中,对于任意
,若点
满足
,则称点M是点P,Q的“美妙点”.例如:点
,当点
满足
时,则点
是点P,Q的“美妙点”.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/3e458688-7a7e-4e2a-9162-f1f82f1fb9df.png?resizew=229)
(1)已知点
,请说明其中一点是另外两点的“美妙点”;
(2)如图,已知点D是直线
上的一点.点
,点
是点D、E的“美妙点”.
①求y与x的函数关系式;
②若直线
与x轴相交于点F,当
为直角三角形时,求点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd413eac4a977b6859cea943a96155d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a8eb194c397afdb40737d432f87266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a3b1e839654e2c2e94ffedd6438cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9b39596830298071074f6c3faf0e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a8eb194c397afdb40737d432f87266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f297704fffe26db84a95033a801e28bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c54b37c7673f0e975343b96acf0afa6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/3e458688-7a7e-4e2a-9162-f1f82f1fb9df.png?resizew=229)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfb8f2770b49046f0795ea80c356660.png)
(2)如图,已知点D是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8e2fa0e4383590afe6d8f1d7aa8bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c493fa574140cae8d85982db2055c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a8eb194c397afdb40737d432f87266.png)
①求y与x的函数关系式;
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadb6f330e2d5325adb08c2b1d80b1ae.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】规定:若P(x,y)是以x,y为未知数的二元一次方程ax+by=c的整数解,则称此时点P为二元一次方程ax+by=c的“理想点”.请回答以下关于x,y的二元一次方程的相关问题.
(1)已知A(−1,2),B(4,−3),C(−3,4),请问哪个点是方程2x+3y=6的“理想点”,哪个点不是方程2x+3y=6的“理想点”并说明理由;
(2)已知m,n为非负整数,且
,若P(
,
)是方程2x+y=8的“理想点”,求
的平方根.
(3)已知k是正整数,且P(x,y)是方程2x+y=1和
的“理想点”,求点P的坐标.
(1)已知A(−1,2),B(4,−3),C(−3,4),请问哪个点是方程2x+3y=6的“理想点”,哪个点不是方程2x+3y=6的“理想点”并说明理由;
(2)已知m,n为非负整数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c61fd8716418f347fc5335ece050865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84dba41a7a4a57ca08a148e35e6971e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d90e816cf52fc91a9d65f305f9bd379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9bf647642e5ee3f8b54f7de4926685.png)
(3)已知k是正整数,且P(x,y)是方程2x+y=1和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc442914cde3b64f611c58ecf0783963.png)
您最近一年使用:0次