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  • 2 years ago

can anyone explain me the radius of convergence of power series?

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  1. divans
    • 2 years ago
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    The radius of convergence of a power series is a way to measure the size of the set of numbers of the variable, say X, for which the power series actually converges. For example, the power series for e^x includes all reals, so the radius of convergence is infinite. However, some series may only converge for -1<x<1, so the radius of convergence in this case is 1. This is found by using the ratio test.

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