For what values of z is convergent? I don't know how to start this, any help would be great to get me going..
Last edited by Plato; Nov 29th 2009 at 05:32 AM.
Follow Math Help Forum on Facebook and Google+
Originally Posted by gizmo For what values of z is convergent? I don't know how to start this Start by solving . WHY?
can we use that because we know it converges?
You use the root test: A series converges absolutely if: So you start like, like Plato to solve Check this out: Radius of convergence - Wikipedia, the free encyclopedia
View Tag Cloud