October 17th, 2009, 12:09 AM  #1 
Newbie Joined: Oct 2009 Posts: 1 Thanks: 0  Please Solve this integration Code: Hi all , I am unable to solve this question Integration with limits 0 to ?/2 ? dx / (a + bcosx)² 
October 17th, 2009, 03:21 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,095 Thanks: 1905 
Use the substitution t = tan(x/2) and consider a > b, a = b, and a < b separately. Note that the integral doesn't have a finite value for certain values of a and b.


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