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# (a) What is the radius of convergence of a power series?How do you find it?(b) What is the interval of convergence of a power series?How do you find it?

## a) The radius of convergence is the distance between the endpoints of the radius of convergence and its center. It is found by adding the absolute values of both endpoints together and dividing by two.b) The interval of convergence is the domain of $x$ values for which the power series converges. It is found by using the ratio test to determine for what values the series is convergent.

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