Linear Programming Models-Problem
The mathematical relationships that follow were formulated by an operations research analyst at the Smith-Lawton Chemical Company. Which ones are invalid for use in an LP problem and why?
Maximize profit = 4X1 + 3X1X2 + 8X2 + 5X3
subject to
2X1 + X2+ 2X3 ? 50
X1 - X2 ? 50
1.5X12 + 6X23X2 ? 21
19X2 - 0.35X3 = 17
5X1 + 4X2 + ? X3 ? 80
-X - X2 + X3 = 5