1) задача; проблема
2) осложнение; затруднение
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problem leading to quadratic equations — задача на квадратные уравнения;
problem with fixed end-points — (вариационная) задача с закреплёнными концами;
problem with two variable end-points — (вариационная) задача со свободными концами
- benchmark problem
- boundary-value problem
- boundary problem
- characteristic problem
- chess problem
- computational problem
- construction problem
- convex programming problem
- Diophantine problem
- direction-finding problem
- drilling problems
- dynamical problem
- eigenvalue problem
- exterior problem
- extremal problem
- game problem
- heat problem of friction
- homogeneous problem
- ill-conditioned problem
- ill-defined problem
- ill-posed problem
- initial-value problem
- inverse problem
- isoperimetrical problem
- isoperimetric problem
- logical problem
- logic problem
- many-dimensional problem
- maximum problem
- minimization problem
- minimum problem
- mixed problem
- model problem
- multiobjective problem
- operating problems
- optimization problem
- problem of control
- problem of moments
- problem of pursuit
- queuing problem
- reliability problem
- starch problem
- test problem
- toy problem
- trade-off problem
- transportation problem
- transport problem
- troubleshooting problem
- undecidable problem
- variational problem
- work problem