Question

1. Find the radius of convergence for: ∞∑n=1 (n!)^2 x^n /(2n)! 2.  Find all the values of...

1. Find the radius of convergence for:
∞∑n=1 (n!)^2 x^n /(2n)!

2.  Find all the values of x such that the given series would converge.
∞∑n=1 (−1)^n x^n / 2^n(n^2+9)
The series is convergent
from x=   
to x=

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