已知{an}为等差数列,且a3=-6,a6=0(1)求0000000000000000000000000000000000000000000已知{an}为等差数列,且a3=-6,a6=0(1)求{ |an| }的前n项和;(2)若等差数列{bn}满足b1=-8,b2=a1+a2+a3,求{bn}|前n项和公式.
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![已知{an}为等差数列,且a3=-6,a6=0(1)求0000000000000000000000000000000000000000000已知{an}为等差数列,且a3=-6,a6=0(1)求{ |an| }的前n项和;(2)若等差数列{bn}满足b1=-8,b2=a1+a2+a3,求{bn}|前n项和公式.](/uploads/image/z/2704684-4-4.jpg?t=%E5%B7%B2%E7%9F%A5%7Ban%7D%E4%B8%BA%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E4%B8%94a3%3D-6%2Ca6%3D0%281%29%E6%B1%820000000000000000000000000000000000000000000%E5%B7%B2%E7%9F%A5%7Ban%7D%E4%B8%BA%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E4%B8%94a3%3D-6%2Ca6%3D0%281%29%E6%B1%82%7B+%7Can%7C+%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%EF%BC%9B%282%29%E8%8B%A5%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%7Bbn%7D%E6%BB%A1%E8%B6%B3b1%3D%EF%BC%8D8%2Cb2%3Da1%2Ba2%2Ba3%2C%E6%B1%82%7Bbn%7D%7C%E5%89%8Dn%E9%A1%B9%E5%92%8C%E5%85%AC%E5%BC%8F.)
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