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-E^(3*Cos[2*x])/6


Integrate[E^(3*Cos[2*x])*Sin[2*x], x] ==
-E^(3*Cos[2*x])/6



           3 Cos[2 x]
Integrate[E           Sin[2 x], x] == 

  3 Cos[2 x]
-E
------------
     6

Time to compute: 0.03 second

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