integrals.wolfram.com   Use one of Mathematica's 2500+ functions FREE online

Wolfram Mathematica Online Integrator
The world's only full-power integration solver
∫
(a*x + Log[-Cos[a*x] - Sin[a*x]])/(2*a)

Integrate[1/(1 + Tan[a*x]), x] ==
(a*x + Log[-Cos[a*x] - Sin[a*x]])/(2*a) 

               1
Integrate[------------, x] == 
          1 + Tan[a x]

a x + Log[-Cos[a x] - Sin[a x]]
-------------------------------
              2 a
Time to compute: 0.03 second
Spread the word: