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题数列{an}满足:对于任意72∈N,an+1=6n-an且a1=1,则通项公式an=____. (第12届“希望杯”高二培训) 1.一题多解,串点成线解法1 基本数列法因为所以可得
Question number column {an} satisfies: for any 72∈N, an+1=6n-an and a1=1, the general term an=____. (The 12th “Hope Cup” high school training) 1. A multi-solution , string and line into the line solution 1 because the basic sequence method can be obtained