已知:等比数列{an}中,a1=3,a4=81,(n∈N*).(1)若{bn}为
题型:解答题
问题:
已知:等比数列{an}中,a1=3,a4=81,(n∈N*). (1)若{bn}为等差数列,且满足b2=a1,b5=a2,求数列{bn}的通项公式; (2)若数列{bn}满足bn=log3an,求数列{
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已知:等比数列{an}中,a1=3,a4=81,(n∈N*). (1)若{bn}为等差数列,且满足b2=a1,b5=a2,求数列{bn}的通项公式; (2)若数列{bn}满足bn=log3an,求数列{
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