Wolfram Mathematica Online Integrator
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Integrate[x^4*Log[a*x], x] ==
(x^5*(-1 + 5*Log[a*x]))/25
4 Integrate[x Log[a x], x] ==
5
x (-1 + 5 Log[a x])
--------------------
25
Time to compute: < 0.01 second
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