2 / 2\ 2 / 2\ \10 - x / *2 - 8*x *\10 - x /
2 / 2\ 2 / 2\ 2*\10 - x / + x *\-80 + 8*x /
2.0*(10.0 - x^2)^2 - 8.0*x^2*(10.0 - x^2)
/ 2\ / 2\ \2 - x /*\100 - 10*x /
/ 2\ / 2\ 10*\-10 + x /*\-2 + x /
2 4 200 - 120*x + 10*x