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Direct comparison test
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<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, the comparison test, sometimes called the direct comparison test to distinguish it from similar related tests (especially the <a href="/facts/Limit_comparison_test/NjqDPkmo">limit comparison test</a>), provides a way of deducing whether an <a href="/facts/Series_(mathematics)/yDnlsgIe">infinite series</a> or an <a href="/facts/Improper_integral/1YLuane0">improper integral</a> converges or diverges by comparing the series or integral to one whose convergence properties are known. </p>