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函数是初中数学的重要内容之一,是历年中考的考点、热点之一,且函数知识有较强的综合性,是代数与几何知识的统一体,内容涉及的知识比较宽,灵活多变,解
The function is one of the important contents of junior high school mathematics, and it is one of the test points and hotspots of the previous year’s senior high school entrance examination. The function knowledge has a strong comprehensiveness and is a unity of algebra and geometry knowledge. The knowledge involved in the content is relatively wide and flexible. solution