名校
1 . 观察下列等式:
;
;
;
;
……
照此规律,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc8324ea51a194b576f55c503a4a1b8.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5190ba39d0e5b2435401f0ce887b9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f48501604b5921e8b967048755765be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6314fa278b1b6d029a9ecef09d3803bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ba98d2eeceaa159616a0335e3a3a59.png)
……
照此规律,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc8324ea51a194b576f55c503a4a1b8.png)
您最近一年使用:0次
2021-05-11更新
|
207次组卷
|
18卷引用:安徽省亳州市第二中学2018-2019学年高二下学期第二次月考数学(文)试题
安徽省亳州市第二中学2018-2019学年高二下学期第二次月考数学(文)试题2018届高三数学文科二轮复习:专题检测(五) 复数、算法、推理与证明(已下线)2018年高考二轮复习测试专项【苏教版】专题九 算法 推理与证明 复数(已下线)《考前20天终极攻略》6月3日 推理与证明【文科】(已下线)实战演练1.3-2018年高考艺考步步高系列数学河南省驻马店市2018-2019学年高二下学期期末考试数学(文)试题(已下线)狂刷55 推理与证明-学易试题君之小题狂刷2020年高考数学(理)(已下线)专题33 算法、复数、推理与证明-十年(2011-2020)高考真题数学分项(七)(已下线)专题12.1 合情推理与演绎推理(精讲)-2021届高考数学(文)一轮复习讲练测(已下线)专题18+新定义题、推理与证明-2021高考数学(理)高频考点、热点题型归类强化(已下线)文科数学-2021年高考考前20天终极冲刺攻略+(三) (6月5日)(已下线)专题02 推理与证明-2020-2021学年高二数学下学期期末专项复习(苏教版选修2-2、2-3)(已下线)第二章 推理与证明【专项训练】-2020-2021学年高二数学(理)下学期期末专项复习(人教A版选修2-2)黑龙江省七台河市勃利县高级中学2020-2021学年高三上学期期中考试数学(文)试题(已下线)考点27 数学归纳法-备战2022年高考数学一轮复习考点帮(浙江专用)江西省上饶市广信区综合高级中学2020-2021学年高二下学期期末数学(文)试题江西省上饶市广信区综合高级中学2020-2021学年高二下学期期末数学(理)试题(已下线)专题11 简易逻辑与推理(文科)
2 . 如图,连接△ABC的各边中点得到一个新的
,又连接
的各边中点得到
,如此无限继续下去,得到一系列三角形:
,
,
,…,这一系列三角形趋向于一个点M.已知A(0,0),B(3,0),C(2,2),则点M的坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba93424da4ea50edc36225ae97b68b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba93424da4ea50edc36225ae97b68b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3147863b7879e55d03b057c2ae2cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba93424da4ea50edc36225ae97b68b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3147863b7879e55d03b057c2ae2cc0.png)
![](https://img.xkw.com/dksih/QBM/2022/10/19/3091197426466816/3094083273629696/STEM/abd003bfe04643acbc4d3dc413811ac1.png?resizew=205)
您最近一年使用:0次
2022-10-23更新
|
115次组卷
|
2卷引用:安徽省滁州市定远县育才学校2022-2023学年高二上学期第一次月考数学试题
名校
3 . 如图,用相同的圆点按照一定的规律拼出图形.第一幅图4个圆点,第二幅图7个圆点,第三幅图10个圆点,第四幅图13个圆点......按照此规律,第一百幅图中圆点的个数是__________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/cf5913dc-fb73-4563-9258-2e26754a81f9.png?resizew=374)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/cf5913dc-fb73-4563-9258-2e26754a81f9.png?resizew=374)
您最近一年使用:0次
名校
4 . 如图,第n个图形是由正
边形扩展而来的,则第
个图形中共有______ 个顶点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3468a665ac713ab7b400c672f19650a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1271285428c740905f7d5db68c5dc6.png)
![](https://img.xkw.com/dksih/QBM/2022/8/31/3056575427657728/3061334545956864/STEM/dc539da91d78417ab52c039f38eb118a.png?resizew=312)
您最近一年使用:0次
2022-09-07更新
|
108次组卷
|
6卷引用:安徽省安庆市第一中学2022-2023学年高二下学期第一次月考数学试题
5 . 已知:
;
;
.
通过观察上述三个等式的规律,写出能反映一般规律的等式,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175c6d4e6bea4498e433d6910807a70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea616295fe9501f5059a6fbe5aa3306a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2db2081507b58d706a5fe54f931942.png)
通过观察上述三个等式的规律,写出能反映一般规律的等式,并证明你的结论.
您最近一年使用:0次
6 . 观察下列各式:
,
,
……,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feee809943d84ffb1364445de023faf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b7665d2244278da84dc45faa6aee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3607f7acce2d96f68b873a6dbfc764b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9a899d7712fa083a7394274e922b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feee809943d84ffb1364445de023faf8.png)
A.14400 | B.13959 | C.14175 | D.13616 |
您最近一年使用:0次
2020-04-16更新
|
286次组卷
|
3卷引用:安徽省黄山市屯溪第一中学2020-2021学年高二下学期期中文科数学试题
7 . 由正整数组成的数对按如下规律排列:
,
,
,
,
,
,
,
,
,
,
,
,….若数对
满足
,
,则数对
排在第______ 位.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86022205a7487439dd8d0897cd3bf19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0481d24e2af1e0cd348732b9444d1dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990eaf5dbba84f199bdc438da81fcfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce2830528c2ea6b5d4df0c77644e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4559e8b5861ebbf7c0f5c6d9a819f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5511a368692de27c58ec48ce968de4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4663597238972d1a53ccd76c8ec3ac95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33715f55741ff2f2da5f9417be52c94b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
您最近一年使用:0次
8 . 如图是一个类似“杨辉三角”的图形,记
分别表示第
行的第
个数,第
个数,······第
个数,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b2e35068487838f8f9fa3a90af5ed2.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7566f57586aef12c495395dc984a72f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b974113b04534e6855489aebd8354d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b2e35068487838f8f9fa3a90af5ed2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/5968a381-ffe0-47b0-b25d-cdd55e240e58.png?resizew=176)
您最近一年使用:0次
9 . 已知从2开始的连续偶数蛇形排列成宝塔形的数表,第一行为2,第二行为4,6,第三行为12,10,8,第四行为14,16,18,20,…,如图所示,在该数表中位于第
行、第
行的数记为
,如
,
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a0ffd97e63546f5181037e416a46aa.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a14c188b1c9d61aa237b137ba18023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d65591e3c0858f28b2b8a84fb5a50e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bea5275a93613eadfdde7b9f0e00590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f18fb884093fdc101844d1024b15fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a0ffd97e63546f5181037e416a46aa.png)
![](https://img.xkw.com/dksih/QBM/2018/7/8/1984043695022080/1985696665165824/STEM/81cd619623de460b95b33893294ade9e.png?resizew=197)
您最近一年使用:0次
2018-07-10更新
|
492次组卷
|
3卷引用:【全国市级联考】安徽省蚌埠市2017-2018学年高二下学期期末考试数学(理)试题
10 . 将集合
中所有的数按照上小下大,左小右大的原则写成如下的三角形表:
![](https://img.xkw.com/dksih/QBM/2017/10/13/1794326742441984/1794381793705985/STEM/fcc2f7e4be6b4a5a9a938b65c8913cfe.png?resizew=346)
则该数表中,从小到大第50个数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4839751c578dde672840b7d2aaf914f.png)
![](https://img.xkw.com/dksih/QBM/2017/10/13/1794326742441984/1794381793705985/STEM/fcc2f7e4be6b4a5a9a938b65c8913cfe.png?resizew=346)
则该数表中,从小到大第50个数为
您最近一年使用:0次
2017-10-13更新
|
958次组卷
|
4卷引用:安徽省滁州市民办高中2019-2020学年高二下学期期末数学(理)试题