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Integral of Sec^4x

  • Thread starter ibaforsale
  • Start date
  • #1
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0

Homework Statement



The ∫sec4x

Homework Equations





The Attempt at a Solution



Im not entirely sure how to do this. At first I was thinking u sub but then theres nothing for u'.
 

Answers and Replies

  • #2
FeDeX_LaTeX
Gold Member
437
13
What trig identities do you know involving se(x)?
 
  • #3
LCKurtz
Science Advisor
Homework Helper
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Gold Member
9,535
751

Homework Statement



The ∫sec4x

Homework Equations





The Attempt at a Solution



Im not entirely sure how to do this. At first I was thinking u sub but then theres nothing for u'.
Try writing it as$$
\int \sec^2x(1+\tan^2 x)~dx$$and look for a ##u## substitution.
 

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