Recent content by queensu

(2n+3)=(2n+3)*(2(n-1)+1)! = 2n+3)*(2n-2+3)! =(2n+3)(2n+1)! ||| (2n+1)! cancels and I am left with 1/(2n+3)

oh.. awesome thanks a lot. after very long thing of expanding that i got 1/ (2n+3)

Homework Statement Hi! I need to find ratio (2n+1)!/(2n+3)! for interval of convergence calculation. Homework Equations 5! = 1*2*3*4*5The Attempt at a Solution i have no idea where to start since i have never dealt with factorials before.. if you just show me some kind off factorial...