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

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

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

           2                     2
-(x (-6 + x ) Cos[x]) + 3 (-2 + x ) Sin[x]
Time to compute: 0.02 second
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