Prove: If limk+

Chapter 9, Problem 64

(choose chapter or problem)

Prove: If \(\lim _{k \rightarrow+\infty}\left|c_{k}\right|^{1 / k}=L\), where \(L \neq 0\), then \(1 / L\)  is the radius of convergence of the power series \(\Sigma_{k=0}^{\infty} c_{k} x^{k}\).

Equation Transcription:

Text Transcription:

lim k right arrow+ infinity |ck|^1/k=L

L is not = 0

1/L

sum_k=0^ infinity c_k x^k.

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