已知数列|a n |满足: a n =n+1+ 8 7 a n+1 ,且存在大于1的整数k使 a k =0,m=1+ 8 7 a 1 . (1)用a 3 表示m(不必化简) (2)用k表示m(化成最简形式) (3)若m是正整数,求k与m的值.
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举一反三
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