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Power Series with Squares

We show how to find the interval of convergence for a power series if an x^2 term results from the ratio test. Examples are (a) sum [(x/4)^n]/n, and (b) 1 - x^2/2! + x^4/4! - ... . For more videos like this one, please visit the Calculus playlists at this channel.
Length: 07:14

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