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1数列学习中涉及的数学方法(1)观察归纳法。观察数列的基本特征同时找出其构成规律,从各项之间的关系和各项与项数n之间的联系去思考归纳,从而得出数列的通项公式。(2)累加法。推导等差数列通项公式的常用方法,主要对形如a_(n+1)-a_a=f(n)型的递推公式求通项公式。(3)累乘法。这是推导等比数列的通项公式的方
A series of mathematical methods involved in learning (1) observe the induction. Observe the basic characteristics of the sequence and find out the rules of its composition. From the relationship between the various items and the relationship between the number of terms n to think about induction, to arrive at the general formula of the sequence. (2) cumulative method. The general method of deducing the general formula of arithmetic sequence is as follows: The formula of the general formula is given for the recursion formula of the form a_ (n + 1) -a_a = f (n). (3) Multiplication method. This is the side of the general formula for deriving the geometric sequence