Expression 3: "h" left parenthesis, "x" , "y" , right parenthesis equals StartAbsoluteValue, "x" , EndAbsoluteValue plus StartAbsoluteValue, "y" , EndAbsoluteValuehx,y=x+y
3
Expression 4: "J" left parenthesis, "x" , "y" , right parenthesis equals left parenthesis, 1 minus alpha , right parenthesis "f" left parenthesis, "x" , "y" , right parenthesis plus alpha "g" left parenthesis, "x" , "y" , right parenthesisJx,y=1−αfx,y+αgx,y
