数学知识有机联系,纵横交错,求解问题即使解答正确合理,未必是最佳思路,追寻数学试题的简洁解法是数学探究的乐趣之一.笔者最近在教学中发现有两道和函数导数相关的二元不等式的证明问题,学生得分极低,而命题者给出的参考答案学生知其然,却不知其所以然.本文结合定积分的概念,借助数形结合的思想介绍一种极为简单的解法,供大家参考.例1函数f(x)=ex-ax+a(a∈R), Mathematical knowledge organic connection, criss-cross, solve the problem, even if the answer is correct and reasonable, may not be the best way to pursue the simple solution to mathematical problems is one of the fun of mathematical exploration.I recently found in teaching and the function derivative of the two Yuan inequality proves that the students score very low, but the proposition who given the reference answer students know however, but I do not know why .In this paper, the concept of definite integral, with the idea of ​​combination of several forms introduced a very simple solution, For your reference. Example 1 function f (x) = ex-ax + a (a ∈ R),