1. In mathematics and engineering, a constraint that must be satisfied exactly with no tolerance or deviation allowed
The system must satisfy an exact constraint that the sum of forces equals zero.
O sistema deve satisfazer uma restrição exata de que a soma das forças seja igual a zero.
2. In optimization problems, an equality constraint as opposed to an inequality constraint
The linear programming problem includes an exact constraint requiring x + y = 10.
O problema de programação linear inclui uma restrição exata exigindo que x + y = 10.