April 19th, 2017, 01:24 PM  #1 
Senior Member Joined: Dec 2015 From: Earth Posts: 175 Thanks: 23  Does series converge?
$\displaystyle \sum_{i=1}^{\infty} \frac{\sin n^3 x}{n^2}$

April 19th, 2017, 01:59 PM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,656 Thanks: 1327 
note ... $\bigg\dfrac{\sin(n^3 x)}{n^2}\bigg \le \dfrac{1}{n^2}$ 

Tags 
conerge, converge, serie, series 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
converge of a series  bonildo  Calculus  4  December 7th, 2014 05:49 PM 
Does this series converge?  Solarmew  Calculus  41  November 15th, 2012 09:58 PM 
Series converge or diverge  zeion  Calculus  2  March 24th, 2010 09:00 AM 
Converge series  soulnoob  Real Analysis  4  September 10th, 2008 12:39 PM 
Does this Series converge on 3  morph  Calculus  5  December 2nd, 2007 11:06 AM 