Interval of Convergence Problem

**JRH** · March 23rd 2012, 04:23 PM

How do i find the interval of convergence for the summation of 1 to infinity for (x+2)^N/N³ ?

**Xeritas** · March 23rd 2012, 05:51 PM

Use the ratio test. The n+1 term divided by the nth term.

**JRH** · March 24th 2012, 07:26 AM

Thanks, I've done that and gotten (X+2). How do I use that to determine the interval of convergence?

**Plato** · March 24th 2012, 07:49 AM

Originally Posted by JRH

Thanks, I've done that and gotten (X+2). How do I use that to determine the interval of convergence?

Can you solve $|x+2|<1~?$
Be sure to test the endpoints!

Thread: Interval of Convergence Problem