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Using the Comparison Test to Determine Convergence of Infinite Series in Calculus

Convergence tests for infinite series determine whether a series of non-negative terms converges or diverges by comparing its terms (or their ratio, in the limit) to a series with known convergence behavior, such as a p-series or geometric series. This belongs to the theory of infinite series in calculus, encompassing the limit comparison test (comparing the limiting ratio of corresponding terms of two series), the direct comparison test (bounding one series' terms above or below by another's), and the convergence criterion for geometric series based on the magnitude of the common ratio.