/ z c \ | - + - | | c z | |-------| | 2 2| \z + c / --------- 9 5*z *c
((z/c + c/z)/(z^2 + c^2))/(((5*z^9)*c))
c z - + - z c ---------------- 9 / 2 2\ 5*c*z *\c + z /
(c/z + z/c)/(5*c*z^9*(c^2 + z^2))
c z --- + --- 5*z 5*c -------------- 9 / 2 2\ c*z *\c + z /
c z - + - z c ---------------- 9 / 2 2\ 5*c*z *\c + z /
(c/z + z/c)/(5*c*z^9*(c^2 + z^2))
c z - + - z c ---------------- 9 / 2 2\ 5*c*z *\c + z /
(c/z + z/c)/(5*c*z^9*(c^2 + z^2))