ÅÐÇ ßÇä áÜæÈ(Ó) = ÍÜ ÝÅä: ÈÓ = ÍÜ Ãí È2Ó = ÍÜ2  Ãí áÜæÈ2(Ó2) = ÍÜ2 Ýíßæä:

 áÜæÈ(Ó) =  áÜæÈ2(Ó2) = áÜæÈ3(Ó3) = ... =  áÜæÈä(Óä)

áÜæÈ(Ó) +  áÜæÈ2(Ó2) +  áÜæÈ3(Ó3) +  áÜæÈ4(Ó4) + ... +  áÜæÈä(Óä) = ä  áÜæÈ(Ó)

                                                                                                    = áÜæÈ(Ó)ä

                                                                                                    =  áÜæÈ(Óä)