acos(x - 3)
-1 ----------------- ______________ / 2 \/ 1 - (x - 3)
-(-3 + x) ------------------ 3/2 / 2\ \1 - (-3 + x) /
/ 2 \ | 3*(-3 + x) | -|1 + -------------| | 2| \ 1 - (-3 + x) / --------------------- 3/2 / 2\ \1 - (-3 + x) /