Expression 3: "C" equals left parenthesis, "x" , "y" , right parenthesisC=x,y
3
Expression 4: "l" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, "f" left parenthesis, left parenthesis, 0 , 0 , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis , right parenthesis greater than or equal to left bracket, 1 , ... , "N" , right bracket squaredlffffffffffffff0,0≥1,...,N2
4
Expression 5: "l" left parenthesis, "Z" , right parenthesis equals "Z" . "x" squared plus "Z" . "y" squaredlZ=Z.x2+Z.y2