7 18*x*atan(7*x) ---------------------- + -------------- / 2\ / 2\ 2 \1 + 49*x /*\2 - 9*x / / 2\ \2 - 9*x /
/ / 2 \ \ | | 36*x | | | 9*|-1 + ---------|*atan(7*x) | | | 2| | | 343*x \ -2 + 9*x / 126*x | 2*|------------ - ---------------------------- + -----------------------| | 2 2 / 2\ / 2\| |/ 2\ -2 + 9*x \1 + 49*x /*\-2 + 9*x /| \\1 + 49*x / / ------------------------------------------------------------------------- 2 -2 + 9*x
/ / 2 \ / 2 \ / 2 \ \ | | 196*x | | 36*x | | 18*x | | | 343*|-1 + ---------| 189*|-1 + ---------| 972*x*|-1 + ---------|*atan(7*x)| | | 2| 2 | 2| | 2| | | \ 1 + 49*x / 18522*x \ -2 + 9*x / \ -2 + 9*x / | 2*|- -------------------- - ------------------------ - ----------------------- + --------------------------------| | 2 2 / 2\ / 2\ 2 | | / 2\ / 2\ / 2\ \1 + 49*x /*\-2 + 9*x / / 2\ | \ \1 + 49*x / \1 + 49*x / *\-2 + 9*x / \-2 + 9*x / / ------------------------------------------------------------------------------------------------------------------ 2 -2 + 9*x