/ 2 \ | 4*x | 2*|-1 + ------| | 2| \ 1 + x / --------------- 2 / 2\ \1 + x /
(2*(-1 + (4*x^2)/(1 + x^2)))/(1 + x^2)^2
-8/(1 + x^2)^3 + 6/(1 + x^2)^2
8 6 - --------- + --------- 3 2 / 2\ / 2\ \1 + x / \1 + x /
/ 2\ 2*\-1 + 3*x / ------------- 3 / 2\ \1 + x /
2*(-1 + 3*x^2)/(1 + x^2)^3
(-2.0 + 8.0*x^2/(1.0 + x^2))/(1.0 + x^2)^2
(-2.0 + 8.0*x^2/(1.0 + x^2))/(1.0 + x^2)^2
2 8*x -2 + ------ 2 1 + x ----------- 2 / 2\ \1 + x /
(-2 + 8*x^2/(1 + x^2))/(1 + x^2)^2
2 8*x -2 + ------ 2 1 + x ----------- 2 / 2\ \1 + x /
(-2 + 8*x^2/(1 + x^2))/(1 + x^2)^2
2 -2 + 6*x -------------------- 6 2 4 1 + x + 3*x + 3*x
(-2 + 6*x^2)/(1 + x^6 + 3*x^2 + 3*x^4)
2 8*x -2 + ------ 2 1 + x ----------- 2 / 2\ \1 + x /
(-2 + 8*x^2/(1 + x^2))/(1 + x^2)^2
/ 2\ 2*\-1 + 3*x / ------------- 3 / 2\ \1 + x /
2*(-1 + 3*x^2)/(1 + x^2)^3