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众所周知,数列{a_n}是常数列的充要条件是a_(n+1)=a_n(n∈N),它的通项公式是a_n=a_1(n∈N)。本文通过几例来说明常数列在解决某些数列问题的妙用。
As we all know, the necessary and sufficient condition for a sequence of {a_n} columns is a_(n+1)=a_n(n∈N), and its general formula is a_n=a_1(n∈N). This article uses several examples to illustrate the utility of constants in solving certain sequence problems.