3 x ---------- 2 2*(x + 1)
x^3/((2*(x + 1)^2))
-1 + x/2 - 1/(2*(1 + x)^2) + 3/(2*(1 + x))
x 1 3 -1 + - - ---------- + --------- 2 2 2*(1 + x) 2*(1 + x)
0.5*x^3/(1.0 + x)^2
x 2 + 3*x -1 + - + -------------- 2 2 2 + 2*x + 4*x
-1 + x/2 + (2 + 3*x)/(2 + 2*x^2 + 4*x)