7*x --------- + atan(7*x) 2 2 1 + 49*x 18*x *atan(7*x) --------------------- + --------------- 2 2 2 - 9*x / 2\ \2 - 9*x /
/ / 2 \ / 2 \ \ | | 49*x | / 7*x \ | 36*x | | |7*|-1 + ---------| 18*x*|--------- + atan(7*x)| 9*x*|-1 + ---------|*atan(7*x)| | | 2| | 2 | | 2| | | \ 1 + 49*x / \1 + 49*x / \ -2 + 9*x / | 2*|------------------ + ---------------------------- - ------------------------------| | 2 2 2 | \ 1 + 49*x -2 + 9*x -2 + 9*x / -------------------------------------------------------------------------------------- 2 -2 + 9*x
/ / 2 \ / 2 \ / 2 \ / 2 \ \ | | 49*x | | 36*x | / 7*x \ | 49*x | 2 | 18*x | | | 1372*x*|-1 + ---------| 27*|-1 + ---------|*|--------- + atan(7*x)| 378*x*|-1 + ---------| 972*x *|-1 + ---------|*atan(7*x)| | | 2| | 2| | 2 | | 2| | 2| | | \ 1 + 49*x / \ -2 + 9*x / \1 + 49*x / \ 1 + 49*x / \ -2 + 9*x / | 2*|- ----------------------- - ------------------------------------------- - ----------------------- + ---------------------------------| | 2 2 / 2\ / 2\ 2 | | / 2\ -2 + 9*x \1 + 49*x /*\-2 + 9*x / / 2\ | \ \1 + 49*x / \-2 + 9*x / / ----------------------------------------------------------------------------------------------------------------------------------------- 2 -2 + 9*x