A: Let's start with the basics. First off, you need new clothes. Then you need to go to a safe place. And take Sayid to somebody you trust. ? H: Y eah . A : Then get to it. A nd stay away from t he cops. Do not get arrested .
【简答题】已知等比数列{a n }的公比大于1,S n 是数列{a n }的前n项和,S 3 =14,且a 1 +8,3a 2 ,a 3 +6依次成等差数列,数列{b n }满足:b 1 =1, b n = a n ( 1 a 1 + 1 a 2 +…+ 1 a n-1 ) (n≥2) (1)求数列{a n }、{b n }的通项公式; (2)求数列{ b n a n }的前n项和T n .