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(1)若bn=an-2,求证:{bn}为等比数列;
(2)求{an}的通项公式.
(1)若bn=an-2,求证{bn}为等比数列;
(2)求{an}的通项公式.
(1)若bn=an-2,求证{bn}为等比数列;
数列{an}满足a1=1,an=an-1+1(n≥2)
数列{an}满足a1=1,an=an-1+1(n≥2)