?????? ???? ?? ??: ??, ??, ???? ??? ?? ???? ??????????????????“??? ???? ?????? ?? ???? ??? ?????????? ?????? ?? ???? ????????”????????????????? ???? ?????????? ??? ?? ????????????? ???????? ????????(??, ?? ?????? ???? ???,?? ???? ?????? ??????????, ???? ???????????????.**?????? ?? ???? = ???? - ???? ?? - ????????-????·?????/?????????? ????????