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(E^(-7 - 2*x)*(-4 + E^(14 + 10*x)))/16

Integrate[E^(3*x)*Cosh[5*x + 7], x] ==
(E^(-7 - 2*x)*(-4 + E^(14 + 10*x)))/16 

           3 x
Integrate[E    Cosh[5 x + 7], x] == 

 -7 - 2 x        14 + 10 x
E         (-4 + E         )
---------------------------
            16
Time to compute: 0.02 second
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