问题描述:
已知等差数列{an}的前n项和为Sn=pn2-2n+q(p,q∈R,n∈N*).
(1)求q的值;
(2)若a1与a5的等差中项为18,bn满足an=2log2bn,求数列的{bn}前n项和.
(1)求q的值;
(2)若a1与a5的等差中项为18,bn满足an=2log2bn,求数列的{bn}前n项和.
问题解答:
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