数列是高中代数的重点内容之一,由于它既具有函数特征,又能构成独特的递推关系,使得它既与中学数学其他部分知识如:函数、方程、不等式、解析几何、二项式定理等有较紧密的联系,又有自己鲜明的特征,并且它还是中学与大学知识的衔接点.因此它是各级各类考试命题的重点和热点,在高中数学科目中占 The sequence is one of the key contents of high school algebra. Because it has both the feature of the function and the unique recurrence relation, the sequence is not only related to the knowledge of other parts of the mathematics of high school such as function, equation, inequality, analytic geometry, binomial theorem Have close relationship with each other and have their own distinctive characteristics, and it is also the connection point between high school and university knowledge.Therefore, it is the focus and hotspot of all kinds of examination propositions at all levels,