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(5*Cos[x] - Cos[5*x])/10

Integrate[Cos[3*x]*Sin[2*x], x] ==
(5*Cos[x] - Cos[5*x])/10 

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

5 Cos[x] - Cos[5 x]
-------------------
        10
Time to compute: 0.02 second
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