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simplex[pivoteqn] - returns a sublist of equations given a pivot
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Calling Sequence
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pivoteqn(C, var)
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Parameters
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C
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set of linear equations
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var
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variable chosen to carry out a pivot operation
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Description
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The function pivoteqn(C, var) returns a sublist of equations from C. Each equation eq returned achieves the minimum non-negative ratio of
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In the special case where all ratios are negative, the function returns FAIL.
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The linear equations C are in the special form produced by simplex[setup].
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The command with(simplex,pivoteqn) allows the use of the abbreviated form of this command.
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