CC := [proc (u) options operator, arrow; 3 end proc, proc (u) options operator , arrow; 6/(4*sin(u)^2+cos(u)^2)^(1/2) end proc, proc (u) options operator, arrow; -6/cos(u) end proc, proc (u) options operator, arrow; -4/sin(u) end proc, proc (u) options operator, arrow; -cos(u)+(cos(u)^2+15)^(1/2) end proc]; CB := [0, 1/2*Pi, Pi, Pi+arctan(2/3), 3/2*Pi-arctan(1/4), 2*Pi];