Wolfram Mathematica Online Integrator
The world's only full-power integration solver
Integrate[x^3/(c^4 + x^4), x] ==
Log[c^4 + x^4]/4
3
x
Integrate[-------, x] ==
4 4
c + x 4 4
Log[c + x ]
------------
4
Time to compute: < 0.01 second
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