一道例题解的辨析与思考

Discriminating and Thinking the Answer to an Example

通过对一道例题解的辨析与思考,强调了与导数相关概念教学的严谨性与重要性.根据例题所涉及到的有关知识,给出了教材以外的求分段函数在分段点处导数的有关定理及推论,从而对某些相关习题的解答带来了方便.

After discriminating and thinking the answer to an example, the article emphasized the strictness and the importance on the teaching of derivative correlation concept. According to the related knowledge of the example, it provided a theorem and inference for seeking the derivative about a segment function at point of division except teaching material. Thus, it brought convenient features for answering some exercises of examples.