0.297902668998087
/ | ___ / ___\ ___ / ___\ ___ / 2 ___\ ___ / 2 ___\ | / 2\ / 2\ \/ 2 *atan\1 + x*\/ 2 / \/ 2 *atan\-1 + x*\/ 2 / \/ 2 *log\1 + x - x*\/ 2 / \/ 2 *log\1 + x + x*\/ 2 / | atan\x / dx = C + x*atan\x / - ----------------------- - ------------------------ - --------------------------- + --------------------------- | 2 2 4 4 /