#import "../../template.typ": *
#show: note.with(
  title: "作业5",
  author: "YHTQ  ",
  date: none,
  logo: none,
  withOutlined: false
)
= B
    牛奶的效用大于鸡腿肉效用
= A?
    在不可微点边际替代率无法定义（？
3. A
    $
    e = ((Delta Q)/(Delta P))/(Q/P)\
    = ((((1.02Q P)/(0.95P))-Q)/(0.05P))/(Q/P)\
    = (1.02-0.95)/(0.05 dot 0.95) > 1\
    $