What type of problems includes at least 2 of the 3 types of functional constraints?

Mixed Problems are characterized by the presence of at least two of the three types of functional constraints: linear constraints, integrality constraints, and non-negativity constraints. These problems often arise in scenarios where multiple objectives must be satisfied simultaneously, such as maximizing profit while minimizing costs, or optimizing resource allocation under various limitations. Due to their complexity, mixed problems can incorporate different types of variables and constraints, making them more versatile in modeling real-world situations.

On the other hand, resource allocation problems typically focus on the distribution of limited resources among various tasks or projects but may not necessarily involve the combined constraints found in mixed problems. Transportation problems focus specifically on the movement of goods from sources to destinations while minimizing costs, typically involving a single type of constraint. Assignment problems are specialized to match tasks to resources (or agents) while minimizing cost or maximizing efficiency but are also more limited in scope compared to mixed problems.