已知
,且n为自然数,对
进行如下“分裂”,可分裂成n个连续奇数的和,如图:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/26/df96c716-f7a1-4da9-931d-f0e5229ea1b8.png?resizew=303)
即如下规律:
,
,
……;
(1)按上述分裂要求,
______,
可分裂的最大奇数为______.
(2)按上述分裂要求,
可分裂成连续奇数和的形式是:
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/26/df96c716-f7a1-4da9-931d-f0e5229ea1b8.png?resizew=303)
即如下规律:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8dea70fa36b4fe815ec149cead458f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18014e43c43dd0f0b437bdc5842ffb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf097fe19c60652381f8a59f23b18391.png)
(1)按上述分裂要求,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c4f544af8449c50ada1273e511d044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c8c2df6fe18c59a759140240abaeb9.png)
(2)按上述分裂要求,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152a6437e4a84f7921ed58d03f6bc05f.png)
更新时间:2023-03-25 17:36:13
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相似题推荐
解答题-问答题
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【推荐1】用黑白两种颜色的正六边形地砖按如下所示的规律拼成若干图案:
![](https://img.xkw.com/dksih/QBM/2020/11/3/2584877632593920/2585008848224256/STEM/77948977be214af58d620725dc0ced01.png?resizew=328)
(1)当黑砖
时,白砖有________块,当黑砖
时,白砖有________块.
(2)第n个图案中,白色地砖共________块.
(3)当黑色与白色地砖共有102块时,求n的值.
![](https://img.xkw.com/dksih/QBM/2020/11/3/2584877632593920/2585008848224256/STEM/77948977be214af58d620725dc0ced01.png?resizew=328)
(1)当黑砖
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
(2)第n个图案中,白色地砖共________块.
(3)当黑色与白色地砖共有102块时,求n的值.
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【推荐2】细心观察图形,认真分析各式,然后回答问题:
![](https://img.xkw.com/dksih/QBM/2018/10/25/2061089541521408/2063217398743040/STEM/9fbff59845fb49bf9ff8c5c277654661.png?resizew=539)
(1)推算出OA10的长和S10的值.
(2)直接用含n(n为正整数)的式子表示OAn的长和Sn的值.
(3)求S12+S22+S32+…+S102的值.
![](https://img.xkw.com/dksih/QBM/2018/10/25/2061089541521408/2063217398743040/STEM/9fbff59845fb49bf9ff8c5c277654661.png?resizew=539)
(1)推算出OA10的长和S10的值.
(2)直接用含n(n为正整数)的式子表示OAn的长和Sn的值.
(3)求S12+S22+S32+…+S102的值.
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解答题-计算题
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【推荐1】探索发现:
=1﹣
;
=
﹣
;
=
﹣
…
根据你发现的规律,回答下列问题:
(1)
= ,
= ;
(2)类比上述规律计算下列式子:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ed98e34b84285163a8b1b45c6fe403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231fd0fbb933002c6a527dcc4f7186f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4a646b098601ebe77beadf1707deca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
根据你发现的规律,回答下列问题:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc577290d0e6ac8d874419ff015a42dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7928cc7a6ebf95b2928289d3350960f2.png)
(2)类比上述规律计算下列式子:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dbdd04a1522c6089a4d73762675cc4b.png)
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【推荐2】探究与发现:我们在过去的学习中已经发现了如下的运算规律:
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f782d70309802445202487eee751cbdd.png)
(1)设a为整数,且
,请用含a的等式写出一般的规律
______;
(2)小戴同学通过计算下列两位数的乘积,发现结果也存在一定的规律,请你补充小戴同学的探究过程:
,
,
,
;
①观察相乘的两位数,可以发现,两位数的十位上的数字______,个位上的数字的和等于______;
②根据发现,若设一个两位数的十位上的数字为m,个位上的数字为n,则另一个两位数的个位上的数字为______(其中m,n为小于10的正整数).则以上两位数相乘的规律是______(用含m、n的等式表示);
③利用发现的规律计算:
______;
④请用所学知识证明②中规律的正确性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396db3510246fa67dfed49e74368b3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7235c707fde258e10a933d3b390c0fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bec4ec9e08795292a4fa88d74385479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f782d70309802445202487eee751cbdd.png)
(1)设a为整数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97c88fd1b91d3ca867e6141c775377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24727225ed242903b75b218965c574a7.png)
(2)小戴同学通过计算下列两位数的乘积,发现结果也存在一定的规律,请你补充小戴同学的探究过程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2267ed3186716bd7f5f8a44bfeb6833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2cf5314cd9fa76539220d546516ce02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d120bb7480582a03cfdeb570f49d878e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3398110759451538c3b121c1476fd6cc.png)
①观察相乘的两位数,可以发现,两位数的十位上的数字______,个位上的数字的和等于______;
②根据发现,若设一个两位数的十位上的数字为m,个位上的数字为n,则另一个两位数的个位上的数字为______(其中m,n为小于10的正整数).则以上两位数相乘的规律是______(用含m、n的等式表示);
③利用发现的规律计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4ef4add4897db0828ca0000f4f0f9b.png)
④请用所学知识证明②中规律的正确性.
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【推荐3】已知
点的初始位置位于数轴上表示1的点,现对点
做如下移动:第1次向左移动3个单位长度至
点,第2次从
点向右移动6个单位长度至
点,第3次从
点向左移动9个单位长度至
点,第4次从
点向右移动12个单位长度至
点,…,依此类推.设点
(
)对应的数为
(
).
(1)点
对应的数
________,点
对应的数
________.
(2)第
次移动到点
,求
的表达式(用含
的式子表示).
(3)是否存在第
次移动到的点
到原点的距离为2020?如果存在,请求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00a1d9b51819d0782cc4414cebb060b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00a1d9b51819d0782cc4414cebb060b.png)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5002f030017f6f0b34a61b2e15c5a9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f762938f5c78eb72bafbb13bf85cba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
(2)第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)是否存在第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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