/ x - 1\ acos\2 /
acos(2^(x - 1))
x - 1 -2 *log(2) ------------------ _______________ / -2 + 2*x \/ 1 - 2
/ 2*x \ x 2 | 2 | -2 *log (2)*|4 + --------| | 2*x| | 2 | | 1 - ----| \ 4 / --------------------------- __________ / 2*x / 2 8* / 1 - ---- \/ 4
/ 4*x 2*x \ x 3 | 3*2 16*2 | -2 *log (2)*|16 + ----------- + --------| | 2 2*x| | / 2*x\ 2 | | | 2 | 1 - ----| | |1 - ----| 4 | \ \ 4 / / ------------------------------------------ __________ / 2*x / 2 32* / 1 - ---- \/ 4