This　paper　incorporates　more　general　cases　with　a　new　class　of　constantly　adjusted　concavity　demand　curves　and　includes　three　types　of　taxes.　To　verify　the　output　symmetry　under　various　forms　of　taxation,　we　simulate　both　linear　and　constant　elasticity　demand　functions　under　the　unit,　demand　ad　valorem,　and　cost　ad　valorem　taxes.　If　all　the　demand　functions　in　the　submarkets　are　linear,　the　total　outputs　are　identical　under　both　uniform　pricing　and　third-degree　price　discrimination.　Furthermore,　if　all　the　weak　market　demand　curves　are　strictly　＂Robinson-concave＂　and　all　the　strong　market　demand　curves　are　strictly　＂Robinson-convex＂　or　linear,　then　the　total　output　under　price　discrimination　exceeds　that　under　uniform　pricing,　and　vice　versa.　While　different　taxes　lead　to　higher　costs,　the　cost　pass-through　changes　the　prices　of　the　products,　and　the　change　of　total　output　still　depends　on　the　curvature　of　the　demand　curve.　Therefore,　the　curvature　of　the　demand　curve　remains　the　main　determinant　of　changes　in　output.　Our　study　provides　a　theoretical　basis　for　market　intervention　in　price　discrimination.