นิพจน์ 3: "z" equals "x" squared plus "y" squared left brace, "g" left parenthesis, "x" , "y" , right parenthesis equals 0 , right bracez=x2+y2gx,y=0
3
นิพจน์ 4: left parenthesis, left bracket, 1 , negative 1 , right bracket 2 , 0 , "f" left parenthesis, left bracket, 1 , negative 1 , right bracket 2 , 0 , right parenthesis , right parenthesis1,−12,0,f1,−12,0
equals=
left parenthesis, 2 , 0 , 4 , right parenthesis2,0,4
left parenthesis, negative 2 , 0 , 4 , right parenthesis−2,0,4
4
นิพจน์ 5: left parenthesis, 0 , left bracket, 1 , negative 1 , right bracket 3 , "f" left parenthesis, 0 , left bracket, 1 , negative 1 , right bracket 3 , right parenthesis , right parenthesis0,1,−13,f0,1,−13
equals=
left parenthesis, 0 , 3 , 9 , right parenthesis0,3,9
left parenthesis, 0 , negative 3 , 9 , right parenthesis0,−3,9
