Hello,
I have to find the radius of convergence with this series
$\displaystyle \Sigma 2^{-n}z^{n^2}} $
I've tried the root test and the ratio test but the solution they give seem inconclusive, is the any clues as to what I should do?
Thank you
Hello,
I have to find the radius of convergence with this series
$\displaystyle \Sigma 2^{-n}z^{n^2}} $
I've tried the root test and the ratio test but the solution they give seem inconclusive, is the any clues as to what I should do?
Thank you