
Calculus Calculus Math Forum 
 LinkBack  Thread Tools  Display Modes 
February 16th, 2009, 01:03 AM  #1 
Newbie Joined: Feb 2009 Posts: 3 Thanks: 0  need help with evaluating integral...
I have this problem that I've been struggling with. The problem is f is integrable on [0, pi/3] sin theta/ cos^2 theta dtheta. I can't figure out what to substitute for cos^2 theta

February 16th, 2009, 02:16 AM  #2 
Newbie Joined: Jan 2009 Posts: 4 Thanks: 0  Re: need help with evaluating integral...
Just in case a picture helps... If you can see how the triangular network might satisfy the chain rule for differentiation, then you may see that you want to integrate up the straight dashed line with respect to the dashed balloon expression to find the function, F. Don't integrate  balloontegrate! http://www.ballooncalculus.org/examples 
February 16th, 2009, 04:16 AM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,814 Thanks: 1046 Math Focus: Elementary mathematics and beyond  Re: need help with evaluating integral...
u = cos(theta), du = sin(theta)d theta

February 16th, 2009, 05:43 PM  #4 
Newbie Joined: Feb 2009 Posts: 3 Thanks: 0  Re: need help with evaluating integral...
thx guys, i was able to figure it out


Tags 
evaluating, integral 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
evaluating integral help  sgtsloth  Calculus  2  April 17th, 2013 07:50 AM 
evaluating the integral  tsl182forever8  Calculus  2  March 16th, 2012 06:56 AM 
Help evaluating the integral  tsl182forever8  Calculus  3  March 15th, 2012 03:46 PM 
Evaluating an integral using C++  Deb_D  Advanced Statistics  6  November 27th, 2010 06:10 AM 
Evaluating an integral  TsAmE  Calculus  4  May 10th, 2010 02:34 PM 