My Math Forum Using series manipulations to find the sums of finite series

 Algebra Pre-Algebra and Basic Algebra Math Forum

 April 22nd, 2016, 01:17 PM #1 Newbie   Joined: Apr 2016 From: newcastle Posts: 14 Thanks: 0 Using series manipulations to find the sums of finite series Hi Quick question I'm having difficultly with, if I have a problem like this, finding the sum of finite series Then I can use this formula But if I have a question like this Can I still just use this formula Or do I have to add on this formula to the second part Any help is greatly appreciated. Thanks, Steve Last edited by skipjack; April 30th, 2016 at 03:25 PM.
 April 22nd, 2016, 01:40 PM #2 Math Team     Joined: Jul 2011 From: Texas Posts: 3,034 Thanks: 1621 $\displaystyle \sum_{k=21}^{44} \left(\dfrac{k^3}{6} - 2k^2\right) = \displaystyle \dfrac{1}{6} \sum_{k=21}^{44} k^3 - 2\sum_{k=21}^{44} k^2$ also, note ... $\displaystyle \sum_{k=21}^{44} a_n = \sum_{k=1}^{44} a_n - \sum_{k=1}^{20} a_n$ Thanks from stevewilliams

 Tags find, finite, manipulations, series, sums

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post extreme112 Calculus 3 February 1st, 2015 05:28 PM tahrabd Real Analysis 2 June 16th, 2012 07:46 AM xdeathcorex Calculus 4 August 31st, 2010 11:03 AM peka0027 Real Analysis 3 April 2nd, 2009 05:22 AM thomas Real Analysis 3 October 30th, 2007 09:03 AM

 Contact - Home - Forums - Cryptocurrency Forum - Top