| 已赞过已踩过你对这个回答的评价是？评论收起 // 高质or满意or特型or推荐答案打点时间 window.iPerformance && window.iPerformance.mark('c_best', +new Date); 推荐律师服务：若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询其他类似问题2010-12-09已知数列｛an｝{bn},对任意正整数N，都有：a1bn+a2bn-1+a3bn-2+……+an-1b2+anb1=2^n+1-n-2462011-04-23已知数列an,bn,对一切正整数n都有：a1bn+a2bn-1+a3bn-2+..anb1=3^n+1-2n-3 （1）如果an=n,求证数列bn是等222020-01-05已知正项数列{an},{bn}满足:对任意正整数n,都有an,bn,a(n+1)...2012-05-09已知数列{an}{bn}中对于任何正整数n都有a1b1+a2b2+anbn=(3n-1)/9+4^n+1+4/932011-06-23数列{an},｛bn｝中，对任何正整数n都有a1b1+a2b2+a3b3+.....+an-1bn-1+anbn=2的n次方（n-1）+162014-05-27数列｛an｝｛bn｝满足a1=b1，且对任意正整数n,{an}中小于等于n的项数恰为bn,{bn}52012-08-08已知数列{an}{bn}满足a1=3,当n≧2时，an-1+an=4n,对于任意的正整数n，b1+2*b2+…+2^(n-1)bn=n*an112016-08-29设各项均为正数的无穷数列{an}，{bn}满足：对任意n∈N*都有2bn=an+an+1且an+12=bn?bn+1，（1）求证：数列2更多类似问题?>为你推荐：特别推荐 F.context('cmsRight', [ { 'url':'/d01373f082025aaf511aa256e9edab64034f1a07?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_450%2Ch_600%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto', 'contractId':'A24KA00562', } ]); 癌症的治疗费用为何越来越高？电动车多次降价，品质是否有保障？“网络厕所”会造成什么影响？华强北的二手手机是否靠谱？为你推荐 F.context('recBrand',[{"img":"\/86d6277f9e2f07083523f69dfb24b899a901f20d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_450%2Ch_600%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto","url":"/hm.js?6859ce5aaf00fb00387e6434e4fcc925"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); window.tt = 1722775209; |