已知等差数列{an}的前n项和为An,且满足a1+a5=6,A9=63;数列{bn}的前n项和为Bn,且满足Bn=2bn-1(n∈N*). (I)求数列{an},{bn}的通项公式ab,bn; (II)设cn=an?bn求数列{cn}的前n项和Sn. |
与“已知等差数列{an}的前n项和为An,且满足a1+a5=6,A9=63;数列{bn}的前n项和为Bn,且满足Bn=2bn-1(n∈N*).(I)求数列{an},{bn}的通项公式ab,bn;(II)设cn=an•bn求数列{cn}的前”考查相似的试题有: