9 problems
micro, macro, s
tatistics
HEC Montréal
Year 2 practice Full solutions
every step worked o
ut
Intermediate micro, intermediate macro and probability: choice, strategy,
growth, policy and inference.
Unofficial practice based on public course descriptions for this level. Not affiliated with or
endorsed by HEC Montréal.
, Micro · Problems 1 to 3 HEC Montréal · Year 2 style
Cost minimization
Problem 1 Problem 2 Problem 3
Choosing inputs Cost function Wage change
q = L0.5K0.5, w = $4, r = $16. Same technology and prices. The wage rises to $16, r stays $16.
1. Optimal K ÷ L? 1. Total cost C(q)? 1. New L and K for q = 100?
2. L and K to make q = 100? 2. AC and MC? 2. New minimum cost?
3. Minimum cost? 3. Returns to scale?
Unofficial practice · Solutions on the next page · HEC Montréal Year 2 style · 02