x*atan(x + 2)
x ------------ + atan(x + 2) 2 1 + (x + 2)
/ x*(2 + x) \ 2*|1 - ------------| | 2| \ 1 + (2 + x) / -------------------- 2 1 + (2 + x)
/ 2\ | 4*x*(2 + x) | 2*|-6 - 4*x + ------------| | 2| \ 1 + (2 + x) / --------------------------- 2 / 2\ \1 + (2 + x) /