关于数学高中的一道应用题!已知等差数列{an},公差d大于0,且a2、as是方程X^2-12X+27=0的两个根,数列{bn}的前n项和为Tn,且Tn=1-1/2Bn.(1)求数列{an}、{bn}的通项公式; (2)记cn=an·bn,求证:c
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![关于数学高中的一道应用题!已知等差数列{an},公差d大于0,且a2、as是方程X^2-12X+27=0的两个根,数列{bn}的前n项和为Tn,且Tn=1-1/2Bn.(1)求数列{an}、{bn}的通项公式; (2)记cn=an·bn,求证:c](/uploads/image/z/2701126-46-6.jpg?t=%E5%85%B3%E4%BA%8E%E6%95%B0%E5%AD%A6%E9%AB%98%E4%B8%AD%E7%9A%84%E4%B8%80%E9%81%93%E5%BA%94%E7%94%A8%E9%A2%98%21%E5%B7%B2%E7%9F%A5%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%2C%E5%85%AC%E5%B7%AEd%E5%A4%A7%E4%BA%8E0%2C%E4%B8%94a2%E3%80%81as%E6%98%AF%E6%96%B9%E7%A8%8BX%5E2-12X%2B27%3D0%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%A0%B9%2C%E6%95%B0%E5%88%97%EF%BD%9Bbn%EF%BD%9D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%E4%B8%BATn%2C%E4%B8%94Tn%3D1-1%2F2Bn.%281%29%E6%B1%82%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E3%80%81%EF%BD%9Bbn%EF%BD%9D%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%EF%BC%9B+%EF%BC%882%EF%BC%89%E8%AE%B0cn%3Dan%C2%B7bn%2C%E6%B1%82%E8%AF%81%EF%BC%9Ac)
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