/ 2\ asin\1 + x /
asin(1 + x^2)
2*x ------------------- _______________ / 2 / / 2\ \/ 1 - \1 + x /
/ 2 / 2\\ | 2*x *\1 + x /| 2*|1 + -------------| | 2| | / 2\ | \ 1 - \1 + x / / --------------------- _______________ / 2 / / 2\ \/ 1 - \1 + x /
/ 2\ | 2 / 2\ | | 2 6*x *\1 + x / | 4*x*|3 + 5*x + --------------| | 2 | | / 2\ | \ 1 - \1 + x / / ------------------------------- 3/2 / 2\ | / 2\ | \1 - \1 + x / /