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2*(-Log[2*Cos[3*x]]/6 + Log[2*Sin[3*x]]/6)


Integrate[Csc[3*x]*Sec[3*x], x] ==
2*(-Log[2*Cos[3*x]]/6 + Log[2*Sin[3*x]]/6)



Integrate[Csc[3 x] Sec[3 x], x] == 

   -Log[2 Cos[3 x]]   Log[2 Sin[3 x]]
2 (---------------- + ---------------)
          6                  6

Time to compute: 0.01 second

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