待定系数法在证明微分中值存在性问题中的应用

Application of Method of Undetermined Coefficient in Proof of Existence of Differential Coefficient Median

在证明微分中值的存在性问题时,将微分中值的存在性问题化归成确定待定系数的问题,突破了解决该类问题时难以设立辅助函数的问题.

In our existence proof of differential coefficient median, the problem of existence of differential coefficient median is transformed into the problem of making certain the coefficient, therefore we overcome the obstacle of the construction of assistant function in solving this sort of problem.