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[高二数学名师视频讲堂] 高二数学名师视频讲堂第7讲:等差数列的前n项和(二)
高二数学名师视频讲堂第6讲:等差数列的前n项和(二)。知识与技能:通过实例,理解等差数列的概念;探索并掌握等差数列的通项公式;能在具体的问题情境中,发现数列的等差关系并能用有关知识解决相应的问题;体会等差数列与一次函数的关系。2014-07-29 编辑:alice
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Severity: Warning
Message: Memcache::connect(): Can't connect to 127.0.0.1:11211, Connection refused (111)
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2014-07-29 编辑:alice