数列{an}的前n项和Sn=-n²;,数列{bn}满足b1=2,bn+1=3bn-t(n-1),已知an+1+bn+1=3(an+bn)对任意实数n属于正整数都成立1.求t2.设数列{an²+anbn}的前n项和为Tn,问是否存在不相等的正整数m,k,r,使
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![数列{an}的前n项和Sn=-n²;,数列{bn}满足b1=2,bn+1=3bn-t(n-1),已知an+1+bn+1=3(an+bn)对任意实数n属于正整数都成立1.求t2.设数列{an²+anbn}的前n项和为Tn,问是否存在不相等的正整数m,k,r,使](/uploads/image/z/6127145-17-5.jpg?t=%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%3D-n%26%23178%3B%3B%2C%E6%95%B0%E5%88%97%EF%BD%9Bbn%EF%BD%9D%E6%BB%A1%E8%B6%B3b1%3D2%2Cbn%2B1%3D3bn-t%EF%BC%88n-1%EF%BC%89%2C%E5%B7%B2%E7%9F%A5an%2B1%2Bbn%2B1%3D3%EF%BC%88an%2Bbn%EF%BC%89%E5%AF%B9%E4%BB%BB%E6%84%8F%E5%AE%9E%E6%95%B0n%E5%B1%9E%E4%BA%8E%E6%AD%A3%E6%95%B4%E6%95%B0%E9%83%BD%E6%88%90%E7%AB%8B1.%E6%B1%82t2.%E8%AE%BE%E6%95%B0%E5%88%97%7Ban%26%23178%3B%2Banbn%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%E4%B8%BATn%2C%E9%97%AE%E6%98%AF%E5%90%A6%E5%AD%98%E5%9C%A8%E4%B8%8D%E7%9B%B8%E7%AD%89%E7%9A%84%E6%AD%A3%E6%95%B4%E6%95%B0m%2Ck%2Cr%2C%E4%BD%BF)
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