课程名称︰数量方法入门
课程性质︰经研所硕一必修
课程教师︰王建强
开课学院：社会科学院
开课系所︰经研所
考试日期（年月日）︰2017/09/08
考试时限（分钟）：9:10~12:10 共3小时
试题 :
Instruction:
You have two hours. Write your answers clearly, with good penmanship and good
syntax. A correct but unintelligible answer is a wrong answer. You are allow
to use any theorem, lemma or property we have proved in class or in notes. If
you want to apply any theorem or property we have never talked about, please
prove it.
1. (10 points) Definition: Write down the definiton of a compact set.
2. (10 points) Definition: Let (X, dx), (Y, dy) be metric spaces, and
f: X