2 A6,E Mode problew EA4+9)=00xL BC: A"specified: u(o=o EA du speCked: EAdu=p ormuleron o generic elene: A A B seek variation approxi wetion in tois dow ain ()xu闪)=艺9Q<x<x 0: nuwber of nodes in elemnet n=2: A B (n= us U2