利用级数理论、复变函数的围道积分及傅里叶变换等，给出了狄利克雷积分∫+∞0sinxxdx的计算问题。
Applying such theories as series , integral round a contour , and Fourier transformation , I engage myself in this paper in the calculation of Dirichlet Integral ,∫ ~ ( + ∞) _0sinxxdx .
狄利克雷积分