Recent content by JulioMarcos

Solved. The problem was tha (2(n+1))! = (2n + 2)(2n + 1)(2n)! and I was doing (2(n+1))! = (2n + 2)(2n)! because i thought you should distribute the 2

Homework Statement Find the radius of convergence of the Series: \sum_{i=1}^{\infty}\frac{(2n)!x^n}{(n!)^2} The attempt at a solution I used the Ratio Test but I always get L = |\frac{2x}{n+1}| The answer is 1/4. I think I am mistaking with factorial.