CAS EC 505 Mathematics for Economics
Midterm Exam
8/14/15
I Please write your answers in the blue booklets provided
I Write your name on the blue book in pen
I Good luck!
1. Let x = (2; 2; 1) and y = (1; 0; y3 ):
(a) Find y3 such that the angle between x

EC507 A1: Statistics for Economists
Spring 2016
Problem Set 10
Due Friday, April 29, 12pm (noon) @ Tripolski-Kimel mailbox on the 4th floor
Late problem sets will not be accepted no exceptions. You may work together on the problem set, but
every student