最全数列通项公式求法!
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通项公式的求法
一、普通数列:
类型一 观察法:已知前几项,写通项公式
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类型二 前n项和法 已知前n项和,求通项公式
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二、递推数列:
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类型七、特征根法、不动点法
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数列通项公式的求法
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