由等式∫a b f(x)dx =∫a b f(a +b -x)dx 的特征与功能,变换定积分的上、下限,并进行特殊推广与一般推广,得到一些新结论,可为有关恒等式的证明及一些定积分的计算提供便捷的途径。%Owing to the characteristics and function of the equation ∫a f(x)dx =∫a f(a +b -x)dx , changing the upper and lower limit of definite integral and doing general and specific popularization can get new conclusion , which provides an accessible approach for the proof of identical equation and calculation of integral .
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