18.18 Trinomial Tree(Page 409) √ ot 2 p u 12c S n δt 2 V2a226 Options, Futures, and Other Derivatives, 5th edition C 2002 by John C Hull18.18 Options, Futures, and Other Derivatives, 5th edition © 2002 by John C. Hull Trinomial Tree (Page 409) 6 1 12 2 3 2 6 1 12 2 1/ 2 2 2 2 3 +        s − s d = − = +        s − s d = = = s d r t p p r t p u e d u d m u t S S Sd Su pu pm pd