碰到数列的难题目应当怎样去做?数列大题目有些特长又难懂,真不知道该怎么办?数列{an}中,an+1+an=3n-54(n∈N*)。(1)求数列{an}的通项公式。(2)设Sn为{an}的前n项和,并且有相同
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![碰到数列的难题目应当怎样去做?数列大题目有些特长又难懂,真不知道该怎么办?数列{an}中,an+1+an=3n-54(n∈N*)。(1)求数列{an}的通项公式。(2)设Sn为{an}的前n项和,并且有相同](/uploads/image/z/2813175-63-5.jpg?t=%E7%A2%B0%E5%88%B0%E6%95%B0%E5%88%97%E7%9A%84%E9%9A%BE%E9%A2%98%E7%9B%AE%E5%BA%94%E5%BD%93%E6%80%8E%E6%A0%B7%E5%8E%BB%E5%81%9A%3F%E6%95%B0%E5%88%97%E5%A4%A7%E9%A2%98%E7%9B%AE%E6%9C%89%E4%BA%9B%E7%89%B9%E9%95%BF%E5%8F%88%E9%9A%BE%E6%87%82%2C%E7%9C%9F%E4%B8%8D%E7%9F%A5%E9%81%93%E8%AF%A5%E6%80%8E%E4%B9%88%E5%8A%9E%3F%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E4%B8%AD%EF%BC%8Can%2B1%2Ban%3D3n-54%EF%BC%88n%E2%88%88N%2A%EF%BC%89%E3%80%82%EF%BC%881%EF%BC%89%E6%B1%82%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%E3%80%82%EF%BC%882%EF%BC%89%E8%AE%BESn%E4%B8%BA%EF%BD%9Ban%EF%BD%9D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%EF%BC%8C%E5%B9%B6%E4%B8%94%E6%9C%89%E7%9B%B8%E5%90%8C)
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