Ratio and Root Tests (Calculus 2, Lecture 17)

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Forget all of the other tests: the Ratio Test is incredibly useful! We also cover the (less useful) Root Test.
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This ratio and root test is awesome as u said earlier, but still I like integral test more than this, BTW is all the test u had taught like direct comparison, limit test, Leibniz test, ratio root test, integral test is enough to find if any given infinite series is convergent or divergent?

manojsurya