等比数列{an}的前n项和为Sn,一直对任意的n属于正整数,点(n,Sn),均在函数y=b^x+r的图像上(b>0且b≠1,b,r均为常数)1.求r的值2.当b=2时,记bn=(n+1)/4an(n是正整数),求{bn}的前n项和Tn
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![等比数列{an}的前n项和为Sn,一直对任意的n属于正整数,点(n,Sn),均在函数y=b^x+r的图像上(b>0且b≠1,b,r均为常数)1.求r的值2.当b=2时,记bn=(n+1)/4an(n是正整数),求{bn}的前n项和Tn](/uploads/image/z/1740815-71-5.jpg?t=%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%7Ban%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%E4%B8%BASn%2C%E4%B8%80%E7%9B%B4%E5%AF%B9%E4%BB%BB%E6%84%8F%E7%9A%84n%E5%B1%9E%E4%BA%8E%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E7%82%B9%EF%BC%88n%2CSn%EF%BC%89%2C%E5%9D%87%E5%9C%A8%E5%87%BD%E6%95%B0y%3Db%5Ex%2Br%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8A%EF%BC%88b%3E0%E4%B8%94b%E2%89%A01%2Cb%2Cr%E5%9D%87%E4%B8%BA%E5%B8%B8%E6%95%B0%EF%BC%891.%E6%B1%82r%E7%9A%84%E5%80%BC2.%E5%BD%93b%3D2%E6%97%B6%2C%E8%AE%B0bn%3D%EF%BC%88n%2B1%EF%BC%89%2F4an%EF%BC%88n%E6%98%AF%E6%AD%A3%E6%95%B4%E6%95%B0%EF%BC%89%2C%E6%B1%82%7Bbn%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8CTn)
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