设数列{an}满足a1=2,a(n+1)-an=3乘以2的(2n-1}次方 1.求数列的通项公式; 2.令bn=n乘以an,求数列前n项和
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![设数列{an}满足a1=2,a(n+1)-an=3乘以2的(2n-1}次方 1.求数列的通项公式; 2.令bn=n乘以an,求数列前n项和](/uploads/image/z/3172194-18-4.jpg?t=%E8%AE%BE%E6%95%B0%E5%88%97%7Ban%7D%E6%BB%A1%E8%B6%B3a1%3D2%2Ca%28n%2B1%29-an%3D3%E4%B9%98%E4%BB%A52%E7%9A%84%EF%BC%882n-1%7D%E6%AC%A1%E6%96%B9+1.%E6%B1%82%E6%95%B0%E5%88%97%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%EF%BC%9B+2.%E4%BB%A4bn%3Dn%E4%B9%98%E4%BB%A5an%2C%E6%B1%82%E6%95%B0%E5%88%97%E5%89%8Dn%E9%A1%B9%E5%92%8C)
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