posted by Steven on .
I'm trying to find the radius of convergence for
I did the ratio test and ended up with:
How would I solve for the inequality at this point?
If |(x-2)/(2x+1)| < 1 then
(x-2)^2 < (2x+1)^2
x^2 - 4x + 4 < 4x^2 + 4x + 1
3x^2 + 8x - 3 > 0
x < -3 or x > 1/3