Expression 3: "l" left parenthesis, "f" left parenthesis, "x" , "y" , right parenthesis , "g" left parenthesis, "x" , "y" , right parenthesis , "g" left parenthesis, .5 "x" , .5 "y" , right parenthesis , right parenthesis Has graph.lfx,y,gx,y,g.5x,.5y
3
Expression 4: "l" left parenthesis, "x" Subscript, 1 , Baseline , "x" Subscript, 2 , Baseline , "x" Subscript, 3 , Baseline , right parenthesis equals left parenthesis, 1 minus "x" Subscript, 3 , Baseline , right parenthesis "x" Subscript, 1 , Baseline plus "x" Subscript, 2 , Baseline "x" Subscript, 3 , Baselinelx1,x2,x3=1−x3x1+x2x3
