Integral with Trig Functions

  • Thread starter recon_ind
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  • #1
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Homework Statement



[PLAIN]http://integrals.wolfram.com/images/integral.gif(tan[x]^2*sec[x]^3)dx[/URL] [Broken]

Homework Equations


Whatever you need to complete problem


The Attempt at a Solution


This problem has given me so much grief. I have page loads of work but cant figure it out.
 
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Answers and Replies

  • #2
tiny-tim
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Welcome to PF!

Hi recon_ind! Welcome to PF! :smile:

tan2x sec3x = sec5x - sec3x …

so start with ∫sec3x dx …

use integration by parts (sec2x secx), and fiddle around with it.

Then that should give you an idea for sec5x :wink:
 

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