# Find the absolute maximum and minimum values of f on the set D. f(x, y) = 2 + xy − x − 2y, D is the closed triangular region with vertices (1, 0), (5, 0), and (1, 4)

Question

Find the absolute maximum and minimum values of f on the set D.

f(x, y) = 2 + xy − x − 2y, D is the closed triangular region with vertices (1, 0), (5, 0), and (1, 4)