Question

Question on power series/Interval of convergence

Answer 1

Suppose the Radius of convergence of the power series \[\sum_{}{}C _{n}X^n\] is R

Answer 2

What is the Radius of Convergence of \[sum_{}{}C_nX^{2n}\]\[\[\sum_{}{}C_nX^{2n}\]\]

Answer 3

\[\sum_{}{}C_nX^{2n}\]

Answer 4

wouldn't it be \[\sqrt{R}\]