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我们知道,等比数列、等差数列是中学数学中的基本数列.对于其它类型的数列问题,我们常常可以将其化归为等比数列、等差数列等基本数列的相关问题.其中,最重要的方法之一就是待定系数法.
We know that geometric progressions and arithmetic progressions are the basic sequence of mathematics in middle school. For other types of sequence problems, we can often classify them into problems related to basic sequences such as geometric sequences and arithmetic progressions. One of the important methods is the undetermined coefficient method.