Question

The leaving basic variable in simplex method is the basic variable that

• A. Has the lowest value
• B. Has the largest coefficient in the key row
• C. Has the smallest coefficient in the key row
• D. Goes to zero first as the entering basic variable in increased.

Answer 1

Answer:

C. Has the smallest coefficient in the key row

The leaving basic variable in simplex method has the smallest coefficient in the key row. This basic variable is eliminated first as the entering basic variable is increased. The largest or lowest value or coefficient in the key row is not relevant in determining the leaving basic variable.