等比数列{an}的前N项和为Sn,已知对任意的n∈N*,点(n,Sn)均在函数y=b^x+r(b>0 ,and b≠1,b,r均为常数)的图象上.(1)求r的值;(2)当b=2时,记bn=(n+1)/(4n)(n∈N*),求数列{bn}的前项的和Tn.(2)没有写
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![等比数列{an}的前N项和为Sn,已知对任意的n∈N*,点(n,Sn)均在函数y=b^x+r(b>0 ,and b≠1,b,r均为常数)的图象上.(1)求r的值;(2)当b=2时,记bn=(n+1)/(4n)(n∈N*),求数列{bn}的前项的和Tn.(2)没有写](/uploads/image/z/7988894-62-4.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%E5%B7%B2%E7%9F%A5%E5%AF%B9%E4%BB%BB%E6%84%8F%E7%9A%84n%E2%88%88N%2A%2C%E7%82%B9%EF%BC%88n%2CSn%EF%BC%89%E5%9D%87%E5%9C%A8%E5%87%BD%E6%95%B0y%3Db%5Ex%2Br%EF%BC%88b%3E0+%2Cand+b%E2%89%A01%2Cb%2Cr%E5%9D%87%E4%B8%BA%E5%B8%B8%E6%95%B0%EF%BC%89%E7%9A%84%E5%9B%BE%E8%B1%A1%E4%B8%8A.%EF%BC%881%EF%BC%89%E6%B1%82r%E7%9A%84%E5%80%BC%EF%BC%9B%EF%BC%882%EF%BC%89%E5%BD%93b%3D2%E6%97%B6%2C%E8%AE%B0bn%3D%28n%2B1%29%2F%284n%29%EF%BC%88n%E2%88%88N%2A%EF%BC%89%2C%E6%B1%82%E6%95%B0%E5%88%97%7Bbn%7D%E7%9A%84%E5%89%8D%E9%A1%B9%E7%9A%84%E5%92%8CTn.%282%29%E6%B2%A1%E6%9C%89%E5%86%99)
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