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Lesson 25a - Ratio and Root Test

Lesson 25a - Ratio and Root Test - RatioTest an 1 L n a n...

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Ratio Test Gi i th id th li it L a n 1 li Given a series , then consider the limit: 1 n n a a n n lim Then we have the following: 1. If L < 1, then converges absolutely. (notice the absolute value) a 2 If L 1 th di 1 n n a 2. If L > 1, then diverges. 1 n n 3. If L = 1, then the test fails .
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