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由于学生错误地认为连续可导函数图像上割线斜率的集合与切线斜率的集合相等,造成解答与参考答案有偏差,由此笔者带领学生经历了一个发现问题、解决问题、纠正提升的历程.
Because students mistakenly think that the set of the slope of the secant and the slope of the tangent on the continuous function image are equal, which leads to the discrepancy between the answer and the reference answer. Therefore, the author led the students through a process of discovering the problem, solving the problem and correcting the ascension.