无穷积分的比值判别法及其推论

Ratio Test for Infinite Integral and Its Corollary

借助数列的单调有界定理 ,利用正项级数收敛的充要条件是部分和数列有界 。

In this paper, the application of the D'Alembert test for series of positive is generalized to the infinite integral, using monotonic bounded theorem of series, and necessary and sufficient condition of positive series convergence.