an是 等差数列,sn是前n项和,bn等比数列a1= b1=2,a4+b4=27,s4-b4=10 求2个通项Tn=anb1+an-1b2+...+a1bn,证明Tn+12=-2an+10bn
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![an是 等差数列,sn是前n项和,bn等比数列a1= b1=2,a4+b4=27,s4-b4=10 求2个通项Tn=anb1+an-1b2+...+a1bn,证明Tn+12=-2an+10bn](/uploads/image/z/1549925-53-5.jpg?t=an%E6%98%AF+%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2Csn%E6%98%AF%E5%89%8Dn%E9%A1%B9%E5%92%8C%2Cbn%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97a1%3D+b1%3D2%2Ca4%2Bb4%3D27%2Cs4-b4%3D10+%E6%B1%822%E4%B8%AA%E9%80%9A%E9%A1%B9Tn%3Danb1%2Ban-1b2%2B...%2Ba1bn%2C%E8%AF%81%E6%98%8ETn%2B12%3D-2an%2B10bn)
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