koLAy - zoR 0 ľED Hľ ľĿ? D N DľE + D N D ĿD H Ŀ D Ŀ> Cľ E= HD Hľ N ÜľD H ĿC ľD À O H D ĿD H Ŀ D Ŀ> Cľ E= HD Hľ C HE O H ĿC 28 ľD = N N D E