F(2)=f, left parenthesis, 2, right parenthesis, equals \small{1}1\small{2}2\small{3}3\smal l{4}4\small{5}5\small{6}6\small{7}7 \small{\llap{-}2} - 2\small{\llap{-}3} - 3\small{\llap{-}4} - 4\small{\llap{-}5} - 5\small{\llap{-}6} - 6\small{\llap{-}7} - 7\small{1}1\small{2}2\small{3}3\sma ll{4}4\small{5}5\small{6}6\small{7} 7\small{\llap{-}2} - 2\small{\llap{-}3} - 3\small{\llap{-}4} - 4\small{\llap{-}5} - 5\small{\llap{-}6} - 6\small{\llap{-}7} - 7yyxx\blueD ff