2. Consider the following optimization problem
maximize Z = 2|x|−y
subject to x−y ≤ 6
2x + y ≥−3
with x ∈R, y ≤ 0
(a) Is this problem an LP problem in its current form? Explain your answer.
(b) Convert this problem to an (equivalent) LP problem of the following form:
Maximize Z = cTx
subject to Ax = b
with x ≥ 0, x ∈Rn
where c ∈Rn, 0 ≤ b ∈Rm and A is an m × n matrix. Explain every step you make. In particular, if you introduce new variables explain why this is needed.
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