(c + (1.0 + 3.0*c)/(-1.0 + c))/(1.0 + c)
(c + (1.0 + 3.0*c)/(-1.0 + c))/(1.0 + c)
1 + 3*c + c*(-1 + c) -------------------- (1 + c)*(-1 + c)
(1 + 3*c + c*(-1 + c))/((1 + c)*(-1 + c))
1 + 3*c + c*(-1 + c) -------------------- (1 + c)*(-1 + c)
(1 + 3*c + c*(-1 + c))/((1 + c)*(-1 + c))