Maximize \(Z=x+y\) subject to \(x-y \leq -1,-x+y\leq 0,x\geq 0,y\geq 0\)

\(12\) at \((7,5)\) \(12\) at \((5,7)\) \(12\) at \((6,6)\) \(Z\) has no maximum value

\(Z\) has no maximum value

Sketch the feasible region