
PreCalculus PreCalculus Math Forum 
 LinkBack  Thread Tools  Display Modes 
November 6th, 2016, 01:43 PM  #1 
Senior Member Joined: Feb 2014 Posts: 112 Thanks: 1  These summations are equal?
Hello, These summation is the same? Thanks 
November 6th, 2016, 02:15 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,177 Thanks: 477 
No. $\displaystyle \sum_k kq^k$ converges for q < 1. $\displaystyle \sum_k k \sum_k q^k$ diverges for all q (not = 0).


Tags 
equal, summation, summations, tehse 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Two angles in a triangle are equal and their sum is equal to the third angle?  GIjoefan1976  Algebra  2  February 15th, 2016 03:56 PM 
Need Help : to show 2 almost equal fraction is not equal using contradiction??  rnck  Number Theory  9  May 24th, 2015 03:50 AM 
Find the radius of the congruent circle from equal arc and equal chord length  Shen  Geometry  9  April 14th, 2014 01:21 PM 
want to show that show that two infinite summations R equal  notnaeem  Real Analysis  4  August 16th, 2010 12:32 PM 
Equal transformation on nonequal sets  honzik  Applied Math  0  June 9th, 2009 10:38 AM 