+0  
 
0
108
1
avatar+638 


Let |r| < 1,
\(S = \sum_{k=0}^{\infty} r^k,\)
and

\(T = \sum_{k=0}^{\infty} k r^k\)
Our approach is to write T as a geometric series in terms of a and r .

Give a closed form expression for T in terms of r.

waffles  Feb 9, 2018
edited by waffles  Feb 10, 2018
Sort: 

1+0 Answers

 #1
avatar+73 
0

I need help in this one too. Please help....

amandapaolars  Mar 22, 2018

11 Online Users

avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details