3+33+333+3333+33333一直加到50 个3如何巧算3+33+333+3333+33333一直加解题技巧:a1=3for n>=2an = 10a(n-1) + 3an + 1/3 = 10( a(n-1) + 1/3)=> {...
[欧博娱乐平台] 欧博娱乐数列3,33,333,3333…的an的通项公式是 日期:2025-07-28 09:27:40 点击:59 好评:
数列3,33,333,3333…的an的通项公式是数列的一个通项公式为:an=1/3*(10^n-1)。解题过程如下:解:因为3=1/3*(10-1)=1/3*(10^1-1),即a1=1/3*(10^1-1)。33=1/...
[欧博娱乐平台] 欧博Products of torsion groups 日期:2025-07-28 07:05:55 点击:59 好评:
Let $G = \prod_\alpha G_\alpha$, where $G_\alpha$ are torsion subgroups. It is obvious that if all but finitely many of the $G_\alpha$ have a uniform ...
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Hi there, While doing some research on the indexation status of a client I ran into something unexpected. I have my hypothesis on what might be happin...
[欧博娱乐平台] 欧博官网Vivekananda College 日期:2025-07-27 21:39:05 点击:63 好评:
“From Love found yearning spring forUnion Sweet of mind;And that the bond of rare excellingFriendship bindsâ€-Thirukural – 84Tamil is a special l...
[欧博娱乐平台] 欧博allbet5 Things You Need to Know About the Curren 日期:2025-07-27 02:01:40 点击:63 好评:
Mangrove ecosystems are natural powerhouses and should be protected at all costs....
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Descubre qué es Canva, cómo funciona y sus beneficios para el diseño gráfico. Aprende a usar sus herramientas, plantillas y funcionalidades para crear...
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麒麟9系新旗舰!华为MatePad Pro 12.2今日发布:可直接运行PC软件...
[欧博娱乐平台] 欧博娱乐社团学姐 日期:2025-07-25 12:12:17 点击:67 好评:
(社团学姐)漫画 《社团学姐》漫画由作者QRQ&Shrinell创作,欧博娱乐讲述了校园社团中的趣事与成长故事。主角作为一位充满活力的学姐,在社团中带领着成员们克服困难,不断进步。他们的故事充满了欢笑与泪水,让人感受到青春的美好与热血。 漫画来源于逍遥书城: 长按链接复制到浏览器打...
[欧博娱乐平台] 欧博官网Master Z: Ip Man Legacy 日期:2025-07-25 07:08:10 点击:68 好评:
After being defeated by Ip Man, Cheung Tin-chi lives a depressed life moonlighting as a mercenary before choosing to leave behind martial arts altoget...