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Log[Cos[a*x]]/a^2 + (x*Tan[a*x])/a


Integrate[x*Sec[a*x]^2, x] ==
Log[Cos[a*x]]/a^2 + (x*Tan[a*x])/a



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

Log[Cos[a x]]   x Tan[a x]
------------- + ----------
      2             a
     a

Time to compute: 0.03 second

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