All linear programs can be converted to symmetric form.?/
All linear programs can be converted to standard form.?
All linear program can be converted to standard form. Process is as follows-
(1) Negative variables can be converted to non negative by replacing it as -(-x) = - y where y=-x which is non negative.
(2) A constraint with negative RHS can be multiplied by -1 to get positive RHS.
(3) To make an inequalities equality we can add or subtract a slack variable.
(4) Unrestricted variables can be transformed to restricted variables by writing it into difference of two new non-negative variables.
Hence a Linear Program can always be converted into standard one.
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