x 2 ??? h _ q ??? h _ q H + R _ n ] - 1 , = ( 1 1 + G 2 ??? ?? x 2 ??? h _ t , D H ??? [ ??? i ??? I t G 2 ??? ?? x 2 ??? h _ i , D ??? h _ i , D H + ??? q ??? Q ?? x 2 ??? h _ q ??? h _ q H + R _ n ] - 1 ??? h _ t , D ) ??? G ??? ?? x ??? h _ t , D H ??? [ ??? i ??? I t G 2 ??? ?? x 2 ??? h _ i , D ??? h _ i , D H + ??? q ??? Q ?? x 2 ??? h _ q ??? h _ q H + R _ n ] - 1 , Eq ( 14 ) where G is a g