My Math Forum Wrong integration?

 Calculus Calculus Math Forum

 April 16th, 2016, 04:35 AM #1 Newbie   Joined: Oct 2012 Posts: 29 Thanks: 0 Wrong integration? Here's the solution presented: https://gyazo.com/fed030974b17823cec72c0e07a726ad9 In the last line, shouldn't it be $\displaystyle \frac{1}{0.8}\cos(\frac{x}{0.8})$ and not $\displaystyle 0.8\cos(\frac{x}{0.8})$? Last edited by skipjack; April 16th, 2016 at 04:49 AM.
 April 16th, 2016, 05:06 AM #2 Global Moderator   Joined: Dec 2006 Posts: 21,027 Thanks: 2258 No, as the derivative of $0.8\cos(\frac{\Large x}{\large0.8})$ is $-\sin(\frac{\Large x}{\large0.8})$, as required. Thanks from Volle

 Tags integration, wrong

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post Slangers Calculus 1 November 30th, 2014 02:28 AM Dan3500 Calculus 2 May 13th, 2013 02:51 PM OriaG Calculus 4 February 4th, 2013 06:07 PM Zilee Calculus 4 November 25th, 2011 09:35 AM Insertnamehere Calculus 4 September 6th, 2009 09:14 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top