Wednesday, February 29, 2012

Key column / Key Row / Key number


Key column: In a simplex table the column which contains the most positive number in the objective row is called Key column or pivot column.

Key Row: In a simplex table the raw which contains the lowest displacement ratio is called key row or pivot row.

Key number: In a simplex table the number which lies at the intersection of the key row and key column is called key number.

8 comments:

  1. What is the role of key number in simplex table?

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    Replies
    1. Key element determine which variable should leave the table

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  2. when ratio values are same how to identify key row

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  3. what if the key element is Zero in intial table,how we proceed first iteration??

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  4. If key element is zero in simplex method then what should we do?

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  5. Which one is the displacement ratio

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  6. What if key element is zero what should we do

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