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(x - Log[Cos[x] + Sin[x]])/2


Integrate[Sin[x]/(Cos[x] + Sin[x]), x] ==
(x - Log[Cos[x] + Sin[x]])/2



              Sin[x]
Integrate[---------------, x] == 
          Cos[x] + Sin[x]

x - Log[Cos[x] + Sin[x]]
------------------------
           2

Time to compute: 0.02 second

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