Problem $4($Special Cases in Simplex$)$

In the following tables, $x$ will denote the original decision variables, $s$ will denote the slack$/$surplus

variables and a will denote the artificial variables. Comment on each of the following simplex tableau

$($corresponding basic feasible solution, problem properties etc.$).$ Clearly state your arguments and reason

for full credit.

i$.$ Tableau$-1$: