/ 2 \ cot(2*x) cot(2*x) \-2 - 2*cot (2*x)/*e 6*e ---------------------------- - --------------------- 2 / 2\ 3 atan (3*x) \1 + 9*x /*atan (3*x)
/ / 1 \\ | / 2 \ 27*|--------- + 2*x|| | / 2 \ / 2 \ 12*\1 + cot (2*x)/ \atan(3*x) /| cot(2*x) 2*|2*\1 + cot (2*x)/*\1 + cot (2*x) + 2*cot(2*x)/ + -------------------- + ---------------------|*e | / 2\ 2 | | \1 + 9*x /*atan(3*x) / 2\ | \ \1 + 9*x / *atan(3*x)/ ----------------------------------------------------------------------------------------------------------- 2 atan (3*x)
/ / 2 \ \ | | 6 36*x 27*x | | | 27*|-1 + --------------------- + -------- + --------------------| / 2 \ / 1 \| | / 2 \ | / 2\ 2 2 / 2\ | / 2 \ / 2 \ 81*\1 + cot (2*x)/*|--------- + 2*x|| | / 2 \ | / 2 \ 2 / 2 \ | \ \1 + 9*x /*atan (3*x) 1 + 9*x \1 + 9*x /*atan(3*x)/ 18*\1 + cot (2*x)/*\1 + cot (2*x) + 2*cot(2*x)/ \atan(3*x) /| cot(2*x) -4*|2*\1 + cot (2*x)/*\2 + \1 + cot (2*x)/ + 6*cot (2*x) + 6*\1 + cot (2*x)/*cot(2*x)/ + ----------------------------------------------------------------- + ----------------------------------------------- + ------------------------------------|*e | 2 / 2\ 2 | | / 2\ \1 + 9*x /*atan(3*x) / 2\ | \ \1 + 9*x / *atan(3*x) \1 + 9*x / *atan(3*x) / --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2 atan (3*x)