Review set
Constructing a basic solution and testing feasibility
The questions give you a column set and ask what it determines, sometimes a feasible point, sometimes a point outside the region, sometimes nothing at all. The construction returns quickly; keeping the sign test as a step of its own, rather than assuming it from a clean solve, is what needs practice.
What this involves
Retrieval after a delay, which is what makes knowledge durable.
Answers here count towards what the system knows about your skills.
What this covers
- Construct a basic solution from a chosen basis
Given a standard-form constraint system and a proposed set of columns, the learner can decide whether the set is a basis, construct the corresponding basic solution by setting nonbasic variables to zero and solving the square system, and state separately whether the result is feasible.