已数列{an}为等比数列,且a3=50,a6=25/4 ,设bn=log2底an已知:数列{an}为等比数列,且a3=50,a6=25/4 ,设bn=log2底an(1)求证:{bn}为等差数列(2)求数列{bn}的前n项和Sn(3)求Sn的最大值(4)求Tn=|b1|+|b2|+…
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![已数列{an}为等比数列,且a3=50,a6=25/4 ,设bn=log2底an已知:数列{an}为等比数列,且a3=50,a6=25/4 ,设bn=log2底an(1)求证:{bn}为等差数列(2)求数列{bn}的前n项和Sn(3)求Sn的最大值(4)求Tn=|b1|+|b2|+…](/uploads/image/z/3991555-19-5.jpg?t=%E5%B7%B2%E6%95%B0%E5%88%97%7Ban%7D%E4%B8%BA%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2C%E4%B8%94a3%3D50%2Ca6%3D25%2F4+%2C%E8%AE%BEbn%3Dlog2%E5%BA%95an%E5%B7%B2%E7%9F%A5%EF%BC%9A%E6%95%B0%E5%88%97%7Ban%7D%E4%B8%BA%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2C%E4%B8%94a3%3D50%2Ca6%3D25%2F4+%2C%E8%AE%BEbn%3Dlog2%E5%BA%95an%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9A%7Bbn%7D%E4%B8%BA%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%EF%BC%882%EF%BC%89%E6%B1%82%E6%95%B0%E5%88%97%7Bbn%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%EF%BC%883%29%E6%B1%82Sn%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%EF%BC%884%EF%BC%89%E6%B1%82Tn%3D%7Cb1%7C%2B%7Cb2%7C%2B%E2%80%A6)
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