NCERT Example 4 - Linear Programming
Question: Determine graphically the minimum value of Z = −50x + 20y subject to 2x − y ≥ −5, 3x + y ≥ 3, 2x − 3y ≤ 12, x ≥ 0, y ≥ 0.
Answer: Z has no minimum value (unbounded feasible region).
Full step-by-step NCERT solution with diagrams on Something by Zero.