November 9th, 2017, 08:55 AM  #1 
Member Joined: Dec 2015 From: England Posts: 30 Thanks: 0  double integration
Please could someone help with this question. When me and a friend integrate this with respect to x first and then with y first we both get different answers of 1.13333 and 1.8588 respectively and we can't see where we are going wrong

November 9th, 2017, 09:18 AM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,120 Thanks: 1101 
$\displaystyle \int_0^{1/4} \int_x^{\sqrt{x}}~64x ~dy~dx + \int_{1/4}^{1/2} \int_x^{1/2}~64x~dy~dx = \int_0^{1/2}\int_{y^2}^y~64x~dx~dy = \dfrac {17}{15}$


Tags 
double, integration 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Double integration  spottedtango  Calculus  2  May 23rd, 2014 11:12 AM 
Double Integration  thomasbuegriwpi  Calculus  1  April 6th, 2013 06:07 PM 
double integration  zell^  Calculus  6  April 16th, 2012 09:39 AM 
double integration help  caltex  Calculus  3  May 3rd, 2011 05:58 PM 
Double integration (x/y)*e^y  Calculus  10  March 17th, 2009 04:28 PM 