/ / ___\ / ___\\ 2/ ___\ | atan\\/ x / 3 2*atan\\/ x /| atan \\/ x /*|- ----------- + --------- - -------------| | 3/2 x*(1 + x) ___ | \ x \/ x *(1 + x)/ -------------------------------------------------------- 1 + x
/ 2/ ___\ / ___\ 2/ ___\ 2/ ___\ / ___\\ | 3 3*atan \\/ x / 9*atan\\/ x / 2*atan \\/ x / 4*atan \\/ x / 9*atan\\/ x /| / ___\ |------------- + -------------- - ------------- + -------------- + -------------- - -------------|*atan\\/ x / | 3/2 2 5/2 2 3/2 ___ 2 2 | \x *(1 + x) 2*x x*(1 + x) x *(1 + x) \/ x *(1 + x) 2*x *(1 + x)/ -------------------------------------------------------------------------------------------------------------- 1 + x