Question: Please give me Answer fastly Please prove that in the Krugman (1979) model, after opening trade, consumer welfare has improved. Please use mathematical model to

Please give me Answer fastly Please prove that in the Krugman

Please give me Answer fastly

Please prove that in the Krugman (1979) model, after opening trade, consumer welfare has improved. Please use mathematical model to prove. ( hint: envelope theorem can be used in proving optimization problem of utility) Formulas must be used. like: N = 1/ (a/L + BC)

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