<img src="/close/store/examRes/%7B881BFD6F-A403-4DA4-A5FA-C137FFF800FA%7D/%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81%2016.3.jpg" /> Iw = H1l1 + 2Hδδ, Iw = H1l1 + H2l2, Iw = H1l1 + H2l2 + 2Hδδ, Iw = H1l1 + H2l2 + Hδδ