1. Mar 18, 2010 #1

   Whitishcube

   

   1. The problem statement, all variables and given/known data
   
   Integrate 1/(1-secx)dx by multiplying the integrand by a form of 1.
   
   
   2. Relevant equations
   
   any sort of trig identity?
   
   3. The attempt at a solution
   
   I've tried multiplying by forms of 1 such as secx+tanx, secx-tanx, and others, but when i do, i just end up with a messy looking integrand.
   any pointers with this and any other problems like it?

    

   Whitishcube, Mar 18, 2010
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3. Mar 18, 2010 #2

   Mark44

   

   Insights Author

   Staff: Mentor

   How about multiplying by (1 + sec x)/(1 + sec x)? Is that one you tried?

    

   Mark44, Mar 18, 2010

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