oo / | | / x \ | atan|-----| dx | \x + 2/ | / 1
Integral(atan(x/(x + 2)), (x, 1, oo))
/ | / 2 \ | / x \ log\2 + x + 2*x/ / x \ | atan|-----| dx = C - ----------------- + x*atan|-----| + atan(1 + x) | \x + 2/ 2 \x + 2/ | /
Use the examples entering the upper and lower limits of integration.