2 6*x ------------- __________ / 6 \/ 1 - 4*x
/ 6 \ | 6*x | 12*x*|1 + --------| | 6| \ 1 - 4*x / ------------------- __________ / 6 \/ 1 - 4*x
/ 6 12 \ | 54*x 216*x | 12*|1 + -------- + -----------| | 6 2| | 1 - 4*x / 6\ | \ \1 - 4*x / / ------------------------------- __________ / 6 \/ 1 - 4*x