Recent content by Sentral

It's just the first fraction times (1/4)n. I guess there should be two parenthesis around the first fraction so it's just that quantity multiplied by the (1/4)n

I know that the basic ones such as ratio, divergence, alternating series, comparison, and integral don't work with this series. I believe it uses a test that I haven't learned about, so I was wondering what that could be.

Homework Statement Show that the series \sum_{0}^{\infty}(2n)!/(n!)^2*(1/4)^n diverges Homework Equations I don't know which convergence test to use The Attempt at a Solution I don't have one, because I don't know which convergence test to use. If someone can tell me what to use...

Homework Statement The problem is number 4 at this link: http://college.cengage.com/mathematics/larson/calculus_early/2e/students/downloads/mws6a.pdf The axis of revolution is 150 and the rotation is 150 degrees. Homework Equations Using the shell method. My offset is x+220. The...