(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Suppose that the power series [tex]\Sigma[/tex][a]_{n}[/tex]z^{n} and

\Sigma b_{n} z^{n} havr radii of convergence R! and R2 respictively. Prove that the radius

of convergence of the multiplication is at least R1 * R2

2. Relevant equations

3. The attempt at a solution

I found that the convergence radius is > min(R1, R2)

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# Homework Help: Multiplication of power series

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