Chapter six Demand 需求函数的静态比较分析
Chapter Six Demand 需求函数的静态比较分析
What Do We do in This Chapter? We conduct comparative statics analysis of ordinary demand functions -the study of how ordinary demands x,*(p, p2y)and x2*(p1, p2,y) change as prices p1, p2 and income y change Theoretically, nothing new
What Do We Do in This Chapter? We conduct comparative statics analysis of ordinary demand functions -- the study of how ordinary demands x1 *(p1 ,p2 ,y) and x2 *(p1 ,p2 ,y) change as prices p1 , p2 and income y change. Theoretically, nothing new
Own-Price Changes How does x, *(p,p2 y) change as p changes, holding p2 and y constant? Suppose only p, increases, from p, top” and then to p1
Own-Price Changes How does x1 *(p1 ,p2 ,y) change as p1 changes, holding p2 and y constant? Suppose only p1 increases, from p1 ’ to p1 ’’ and then to p1 ’’’
p Own-Price Changes Ordinary demand curve Fixed p2 and y. p123 for commodity 1 p x1(p1”)x1(p1)X1 x1*(p1”) x1(p1”):X1(p1) x1(p1)
x2 x x1 1 *(p1 ’’’) x1 *(p1 ’) x1 *(p1 ’’) p1 x1 *(p1 x ’) 1 *(p1 ’’’) x1 *(p1 ’’) p1 ’ p1 ’’ p1 ’’’ x1 * Own-Price Changes Ordinary demand curve Fixed p2 and y. for commodity 1
p Own-Price Changes Ordinary demand curve Fixed p2 and y. p y】】 for commodity 1 p p1 price offer p curve x1(p1”)x1(p1)X1 x1*(p1”) x1(p1”):X1(p1) x1(p1)
x2 x x1 1 *(p1 ’’’) x1 *(p1 ’) x1 *(p1 ’’) p1 x1 *(p1 x ’) 1 *(p1 ’’’) x1 *(p1 ’’) p1 ’ p1 ’’ p1 ’’’ x1 * Own-Price Changes Ordinary demand curve for commodity 1 p1 price offer curve Fixed p2 and y