Calculus 2 | 20.6: Interval of Convergence, Worked Start to Finish
Full course — free exercises, Feynman reviews, and AI-graded feedback: https://ludium.ai/courses/calculus-2 One power series, taken all the way: ratio test, radius, and both endpoints checked by hand. This video is the complete method from start to finish, ending with the exact interval of convergence. Key concepts covered: Setting up the ratio test and using its built-in absolute value Simplifying the term ratio while keeping the X and n parts separate Reading the radius directly off the resulting inequality Checking both endpoints, where one diverges and one converges The five-step recipe for any interval-of-convergence problem ━━━━━━━━━━━━━━━━━━━━━━━━ SOURCE MATERIALS The source materials for this video are from • Calculus 2 Lecture 9.7: Power Series, Cal...
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