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Tan[2*x]/3 + (Sec[2*x]^2*Tan[2*x])/6


Integrate[Sec[2*x]^4, x] ==
Tan[2*x]/3 + (Sec[2*x]^2*Tan[2*x])/6



                  4
Integrate[Sec[2 x] , x] == 

                   2
Tan[2 x]   Sec[2 x]  Tan[2 x]
-------- + ------------------
   3               6

Time to compute: < 0.01 second

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