Rajivgandhi,

Personally, I don't think your cases 8, 9, or 10 are needed. These cases are analyzing the "design conditions" of the system. Unless otherwise stipulated in the project requirements, a flexibility analysis addresses the operating conditions of the system (your cases 1, 2, 5, 6, 7).

As to (L8+L9) and (L8-L9) yielding the same results, what was the combination method: algebraic or scalar?