The stable solutions of the integral equation are obtained by the extrapolation method when the smooth factor equals to zero.

然后利用外插值的方法，外推得到光滑因子为零时的积分方程的稳定解。

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Some simple application of method of integrating factor that solve ordinary differential equation is discussed on the limit theory, differential and integral.

讨论了解常微分方程的积分因子法在极限理论、微分学、积分学中的一些应用。

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This paper improved the harmonic current detection method based on UPF (unity power factor), using the slipped window integral to replace the LPF (low pass filter).

本文对基于单位功率因数的谐波电流检测方法进行了改进，用移动窗积分法取代检测中常用的低通滤波器。

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