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 2(p1,p2,y) change as prices p,, p 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. p1" 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. p1" 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